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Finding the Fourth Proportional to 280,354.53, 420,520.86 and 93,366.03

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Solution

The fourth proportional to 280,354.53, 420,520.86 and 93,366.03 is: 140,045.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,354.53 : 420,520.86 = 93,366.03 : x
  2. Step 2: Convert to fraction form
    280,354.53/420,520.86 = 93,366.03/x
  3. Step 3: Cross multiply
    280,354.53x = 420,520.86 × 93,366.03
  4. Step 4: Simplify right side
    280,354.53x = 39,262,363,230.39
  5. Step 5: Solve for x
    x = 39,262,363,230.39/280,354.53
  6. Step 6: Final answer
    x = 140,045.40

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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.