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Finding the Fourth Proportional to 280,123.57, 386,554.98 and 159,248.08

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Solution

The fourth proportional to 280,123.57, 386,554.98 and 159,248.08 is: 219,753.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,123.57 : 386,554.98 = 159,248.08 : x
  2. Step 2: Convert to fraction form
    280,123.57/386,554.98 = 159,248.08/x
  3. Step 3: Cross multiply
    280,123.57x = 386,554.98 × 159,248.08
  4. Step 4: Simplify right side
    280,123.57x = 61,558,138,379.44
  5. Step 5: Solve for x
    x = 61,558,138,379.44/280,123.57
  6. Step 6: Final answer
    x = 219,753.51

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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.