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Finding the Fourth Proportional to 306,487.40, 459,731.10 and 156,669.80

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Solution

The fourth proportional to 306,487.40, 459,731.10 and 156,669.80 is: 235,004.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,487.40 : 459,731.10 = 156,669.80 : x
  2. Step 2: Convert to fraction form
    306,487.40/459,731.10 = 156,669.80/x
  3. Step 3: Cross multiply
    306,487.40x = 459,731.10 × 156,669.80
  4. Step 4: Simplify right side
    306,487.40x = 72,025,979,490.78
  5. Step 5: Solve for x
    x = 72,025,979,490.78/306,487.40
  6. Step 6: Final answer
    x = 235,004.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.