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Finding the Fourth Proportional to 453,903.78, 680,965.02 and 138,341.28

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Solution

The fourth proportional to 453,903.78, 680,965.02 and 138,341.28 is: 207,545.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,903.78 : 680,965.02 = 138,341.28 : x
  2. Step 2: Convert to fraction form
    453,903.78/680,965.02 = 138,341.28/x
  3. Step 3: Cross multiply
    453,903.78x = 680,965.02 × 138,341.28
  4. Step 4: Simplify right side
    453,903.78x = 94,205,572,502.03
  5. Step 5: Solve for x
    x = 94,205,572,502.03/453,903.78
  6. Step 6: Final answer
    x = 207,545.25

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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.