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Finding the Fourth Proportional to 280,003.92, 386,438.70 and 176,788.08

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Solution

The fourth proportional to 280,003.92, 386,438.70 and 176,788.08 is: 243,988.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,003.92 : 386,438.70 = 176,788.08 : x
  2. Step 2: Convert to fraction form
    280,003.92/386,438.70 = 176,788.08/x
  3. Step 3: Cross multiply
    280,003.92x = 386,438.70 × 176,788.08
  4. Step 4: Simplify right side
    280,003.92x = 68,317,755,810.70
  5. Step 5: Solve for x
    x = 68,317,755,810.70/280,003.92
  6. Step 6: Final answer
    x = 243,988.57

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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.