Home / 390,533,985.60-538,901,278.69-231,736,744.23

Finding the Fourth Proportional to 390,533,985.60, 538,901,278.69 and 231,736,744.23

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Solution

The fourth proportional to 390,533,985.60, 538,901,278.69 and 231,736,744.23 is: 319,775,569.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,533,985.60 : 538,901,278.69 = 231,736,744.23 : x
  2. Step 2: Convert to fraction form
    390,533,985.60/538,901,278.69 = 231,736,744.23/x
  3. Step 3: Cross multiply
    390,533,985.60x = 538,901,278.69 × 231,736,744.23
  4. Step 4: Simplify right side
    390,533,985.60x = 124,883,227,785,004,480
  5. Step 5: Solve for x
    x = 124,883,227,785,004,480/390,533,985.60
  6. Step 6: Final answer
    x = 319,775,569.83

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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.