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Finding the Fourth Proportional to 529,059.50, 730,107.47 and 287,346.80

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Solution

The fourth proportional to 529,059.50, 730,107.47 and 287,346.80 is: 396,541.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,059.50 : 730,107.47 = 287,346.80 : x
  2. Step 2: Convert to fraction form
    529,059.50/730,107.47 = 287,346.80/x
  3. Step 3: Cross multiply
    529,059.50x = 730,107.47 × 287,346.80
  4. Step 4: Simplify right side
    529,059.50x = 209,794,045,160.60
  5. Step 5: Solve for x
    x = 209,794,045,160.60/529,059.50
  6. Step 6: Final answer
    x = 396,541.50

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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.