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Finding the Fourth Proportional to 280,951.60, 387,718.68 and 153,635.44

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Solution

The fourth proportional to 280,951.60, 387,718.68 and 153,635.44 is: 212,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,951.60 : 387,718.68 = 153,635.44 : x
  2. Step 2: Convert to fraction form
    280,951.60/387,718.68 = 153,635.44/x
  3. Step 3: Cross multiply
    280,951.60x = 387,718.68 × 153,635.44
  4. Step 4: Simplify right side
    280,951.60x = 59,567,329,998.02
  5. Step 5: Solve for x
    x = 59,567,329,998.02/280,951.60
  6. Step 6: Final answer
    x = 212,019.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.