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Finding the Fourth Proportional to 278,807.16, 384,757.38 and 151,484.88

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Solution

The fourth proportional to 278,807.16, 384,757.38 and 151,484.88 is: 209,051.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,807.16 : 384,757.38 = 151,484.88 : x
  2. Step 2: Convert to fraction form
    278,807.16/384,757.38 = 151,484.88/x
  3. Step 3: Cross multiply
    278,807.16x = 384,757.38 × 151,484.88
  4. Step 4: Simplify right side
    278,807.16x = 58,284,925,538.41
  5. Step 5: Solve for x
    x = 58,284,925,538.41/278,807.16
  6. Step 6: Final answer
    x = 209,051.04

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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.