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Finding the Fourth Proportional to 280,433.70, 420,650.55 and 93,445.20

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Solution

The fourth proportional to 280,433.70, 420,650.55 and 93,445.20 is: 140,167.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,433.70 : 420,650.55 = 93,445.20 : x
  2. Step 2: Convert to fraction form
    280,433.70/420,650.55 = 93,445.20/x
  3. Step 3: Cross multiply
    280,433.70x = 420,650.55 × 93,445.20
  4. Step 4: Simplify right side
    280,433.70x = 39,307,774,774.86
  5. Step 5: Solve for x
    x = 39,307,774,774.86/280,433.70
  6. Step 6: Final answer
    x = 140,167.80

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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.