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Finding the Fourth Proportional to 279,821.31, 386,142.14 and 152,494.17

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Solution

The fourth proportional to 279,821.31, 386,142.14 and 152,494.17 is: 210,435.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,821.31 : 386,142.14 = 152,494.17 : x
  2. Step 2: Convert to fraction form
    279,821.31/386,142.14 = 152,494.17/x
  3. Step 3: Cross multiply
    279,821.31x = 386,142.14 × 152,494.17
  4. Step 4: Simplify right side
    279,821.31x = 58,884,425,522.56
  5. Step 5: Solve for x
    x = 58,884,425,522.56/279,821.31
  6. Step 6: Final answer
    x = 210,435.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.