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Finding the Fourth Proportional to 280,508.47, 420,766.43 and 93,520.03

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Solution

The fourth proportional to 280,508.47, 420,766.43 and 93,520.03 is: 140,281.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,508.47 : 420,766.43 = 93,520.03 : x
  2. Step 2: Convert to fraction form
    280,508.47/420,766.43 = 93,520.03/x
  3. Step 3: Cross multiply
    280,508.47x = 420,766.43 × 93,520.03
  4. Step 4: Simplify right side
    280,508.47x = 39,350,089,156.59
  5. Step 5: Solve for x
    x = 39,350,089,156.59/280,508.47
  6. Step 6: Final answer
    x = 140,281.29

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1.5x scale

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.