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Finding the Fourth Proportional to 529,059.88, 730,107.90 and 287,347.17

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Solution

The fourth proportional to 529,059.88, 730,107.90 and 287,347.17 is: 396,541.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,059.88 : 730,107.90 = 287,347.17 : x
  2. Step 2: Convert to fraction form
    529,059.88/730,107.90 = 287,347.17/x
  3. Step 3: Cross multiply
    529,059.88x = 730,107.90 × 287,347.17
  4. Step 4: Simplify right side
    529,059.88x = 209,794,438,859.64
  5. Step 5: Solve for x
    x = 209,794,438,859.64/529,059.88
  6. Step 6: Final answer
    x = 396,541.96

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1.5x scale

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.