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Finding the Fourth Proportional to 280,114.10, 420,171.15 and 93,125.60

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Solution

The fourth proportional to 280,114.10, 420,171.15 and 93,125.60 is: 139,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,114.10 : 420,171.15 = 93,125.60 : x
  2. Step 2: Convert to fraction form
    280,114.10/420,171.15 = 93,125.60/x
  3. Step 3: Cross multiply
    280,114.10x = 420,171.15 × 93,125.60
  4. Step 4: Simplify right side
    280,114.10x = 39,128,690,446.44
  5. Step 5: Solve for x
    x = 39,128,690,446.44/280,114.10
  6. Step 6: Final answer
    x = 139,688.40

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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.