Home / 437,875.20-656,812.80-280,281.60

Finding the Fourth Proportional to 437,875.20, 656,812.80 and 280,281.60

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Solution

The fourth proportional to 437,875.20, 656,812.80 and 280,281.60 is: 420,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,875.20 : 656,812.80 = 280,281.60 : x
  2. Step 2: Convert to fraction form
    437,875.20/656,812.80 = 280,281.60/x
  3. Step 3: Cross multiply
    437,875.20x = 656,812.80 × 280,281.60
  4. Step 4: Simplify right side
    437,875.20x = 184,092,542,484.48
  5. Step 5: Solve for x
    x = 184,092,542,484.48/437,875.20
  6. Step 6: Final answer
    x = 420,422.40

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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.