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Finding the Fourth Proportional to 519,488.55, 716,887.17 and 290,049.33

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Solution

The fourth proportional to 519,488.55, 716,887.17 and 290,049.33 is: 400,264.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,488.55 : 716,887.17 = 290,049.33 : x
  2. Step 2: Convert to fraction form
    519,488.55/716,887.17 = 290,049.33/x
  3. Step 3: Cross multiply
    519,488.55x = 716,887.17 × 290,049.33
  4. Step 4: Simplify right side
    519,488.55x = 207,932,643,344.10
  5. Step 5: Solve for x
    x = 207,932,643,344.10/519,488.55
  6. Step 6: Final answer
    x = 400,264.15

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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.