Home / 521,899.29-720,208.80-307,053.17

Finding the Fourth Proportional to 521,899.29, 720,208.80 and 307,053.17

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Solution

The fourth proportional to 521,899.29, 720,208.80 and 307,053.17 is: 423,726.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,899.29 : 720,208.80 = 307,053.17 : x
  2. Step 2: Convert to fraction form
    521,899.29/720,208.80 = 307,053.17/x
  3. Step 3: Cross multiply
    521,899.29x = 720,208.80 × 307,053.17
  4. Step 4: Simplify right side
    521,899.29x = 221,142,395,101.90
  5. Step 5: Solve for x
    x = 221,142,395,101.90/521,899.29
  6. Step 6: Final answer
    x = 423,726.18

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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.