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Finding the Fourth Proportional to 529,115.10, 730,166.72 and 287,392.37

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Solution

The fourth proportional to 529,115.10, 730,166.72 and 287,392.37 is: 396,594.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,115.10 : 730,166.72 = 287,392.37 : x
  2. Step 2: Convert to fraction form
    529,115.10/730,166.72 = 287,392.37/x
  3. Step 3: Cross multiply
    529,115.10x = 730,166.72 × 287,392.37
  4. Step 4: Simplify right side
    529,115.10x = 209,844,339,068.13
  5. Step 5: Solve for x
    x = 209,844,339,068.13/529,115.10
  6. Step 6: Final answer
    x = 396,594.88

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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.