Home / 389,935,358,953.92-538,111,428,393.60-216,320,502,899.52

Finding the Fourth Proportional to 389,935,358,953.92, 538,111,428,393.60 and 216,320,502,899.52

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Solution

The fourth proportional to 389,935,358,953.92, 538,111,428,393.60 and 216,320,502,899.52 is: 298,522,645,184.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,935,358,953.92 : 538,111,428,393.60 = 216,320,502,899.52 : x
  2. Step 2: Convert to fraction form
    389,935,358,953.92/538,111,428,393.60 = 216,320,502,899.52/x
  3. Step 3: Cross multiply
    389,935,358,953.92x = 538,111,428,393.60 × 216,320,502,899.52
  4. Step 4: Simplify right side
    389,935,358,953.92x = 116,404,534,806,082,593,226,752
  5. Step 5: Solve for x
    x = 116,404,534,806,082,593,226,752/389,935,358,953.92
  6. Step 6: Final answer
    x = 298,522,645,184.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.