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Finding the Fourth Proportional to 529,097.75, 730,160.25 and 287,385.05

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Solution

The fourth proportional to 529,097.75, 730,160.25 and 287,385.05 is: 396,594.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,097.75 : 730,160.25 = 287,385.05 : x
  2. Step 2: Convert to fraction form
    529,097.75/730,160.25 = 287,385.05/x
  3. Step 3: Cross multiply
    529,097.75x = 730,160.25 × 287,385.05
  4. Step 4: Simplify right side
    529,097.75x = 209,837,136,303.46
  5. Step 5: Solve for x
    x = 209,837,136,303.46/529,097.75
  6. Step 6: Final answer
    x = 396,594.27

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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.