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Finding the Fourth Proportional to 278,466.66, 384,279.17 and 151,139.52

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Solution

The fourth proportional to 278,466.66, 384,279.17 and 151,139.52 is: 208,569.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,466.66 : 384,279.17 = 151,139.52 : x
  2. Step 2: Convert to fraction form
    278,466.66/384,279.17 = 151,139.52/x
  3. Step 3: Cross multiply
    278,466.66x = 384,279.17 × 151,139.52
  4. Step 4: Simplify right side
    278,466.66x = 58,079,769,299.80
  5. Step 5: Solve for x
    x = 58,079,769,299.80/278,466.66
  6. Step 6: Final answer
    x = 208,569.92

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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.