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Finding the Fourth Proportional to 550,857.92, 826,064.48 and 213,721.28

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Solution

The fourth proportional to 550,857.92, 826,064.48 and 213,721.28 is: 320,495.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,857.92 : 826,064.48 = 213,721.28 : x
  2. Step 2: Convert to fraction form
    550,857.92/826,064.48 = 213,721.28/x
  3. Step 3: Cross multiply
    550,857.92x = 826,064.48 × 213,721.28
  4. Step 4: Simplify right side
    550,857.92x = 176,547,558,028.13
  5. Step 5: Solve for x
    x = 176,547,558,028.13/550,857.92
  6. Step 6: Final answer
    x = 320,495.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.