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Finding the Fourth Proportional to 278,818.66, 384,773.25 and 151,496.38

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Solution

The fourth proportional to 278,818.66, 384,773.25 and 151,496.38 is: 209,066.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,818.66 : 384,773.25 = 151,496.38 : x
  2. Step 2: Convert to fraction form
    278,818.66/384,773.25 = 151,496.38/x
  3. Step 3: Cross multiply
    278,818.66x = 384,773.25 × 151,496.38
  4. Step 4: Simplify right side
    278,818.66x = 58,291,754,495.84
  5. Step 5: Solve for x
    x = 58,291,754,495.84/278,818.66
  6. Step 6: Final answer
    x = 209,066.91

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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.