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Finding the Fourth Proportional to 278,808.38, 384,754.56 and 151,482.86

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Solution

The fourth proportional to 278,808.38, 384,754.56 and 151,482.86 is: 209,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,808.38 : 384,754.56 = 151,482.86 : x
  2. Step 2: Convert to fraction form
    278,808.38/384,754.56 = 151,482.86/x
  3. Step 3: Cross multiply
    278,808.38x = 384,754.56 × 151,482.86
  4. Step 4: Simplify right side
    278,808.38x = 58,283,721,146.84
  5. Step 5: Solve for x
    x = 58,283,721,146.84/278,808.38
  6. Step 6: Final answer
    x = 209,045.80

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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.