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Finding the Fourth Proportional to 437,720.30, 656,191.65 and 260,038.70

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Solution

The fourth proportional to 437,720.30, 656,191.65 and 260,038.70 is: 389,827.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,720.30 : 656,191.65 = 260,038.70 : x
  2. Step 2: Convert to fraction form
    437,720.30/656,191.65 = 260,038.70/x
  3. Step 3: Cross multiply
    437,720.30x = 656,191.65 × 260,038.70
  4. Step 4: Simplify right side
    437,720.30x = 170,635,223,616.86
  5. Step 5: Solve for x
    x = 170,635,223,616.86/437,720.30
  6. Step 6: Final answer
    x = 389,827.07

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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.