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Finding the Fourth Proportional to 279,729, 386,026.02 and 152,404.56

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Solution

The fourth proportional to 279,729, 386,026.02 and 152,404.56 is: 210,318.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,729 : 386,026.02 = 152,404.56 : x
  2. Step 2: Convert to fraction form
    279,729/386,026.02 = 152,404.56/x
  3. Step 3: Cross multiply
    279,729x = 386,026.02 × 152,404.56
  4. Step 4: Simplify right side
    279,729x = 58,832,125,726.65
  5. Step 5: Solve for x
    x = 58,832,125,726.65/279,729
  6. Step 6: Final answer
    x = 210,318.29

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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.