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Finding the Fourth Proportional to 529,141.46, 730,228.80 and 287,437.87

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Solution

The fourth proportional to 529,141.46, 730,228.80 and 287,437.87 is: 396,671.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,141.46 : 730,228.80 = 287,437.87 : x
  2. Step 2: Convert to fraction form
    529,141.46/730,228.80 = 287,437.87/x
  3. Step 3: Cross multiply
    529,141.46x = 730,228.80 × 287,437.87
  4. Step 4: Simplify right side
    529,141.46x = 209,895,407,150.96
  5. Step 5: Solve for x
    x = 209,895,407,150.96/529,141.46
  6. Step 6: Final answer
    x = 396,671.63

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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.