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Finding the Fourth Proportional to 280,083.89, 386,513.99 and 159,225.17

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Solution

The fourth proportional to 280,083.89, 386,513.99 and 159,225.17 is: 219,729.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,083.89 : 386,513.99 = 159,225.17 : x
  2. Step 2: Convert to fraction form
    280,083.89/386,513.99 = 159,225.17/x
  3. Step 3: Cross multiply
    280,083.89x = 386,513.99 × 159,225.17
  4. Step 4: Simplify right side
    280,083.89x = 61,542,753,036.43
  5. Step 5: Solve for x
    x = 61,542,753,036.43/280,083.89
  6. Step 6: Final answer
    x = 219,729.72

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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.