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Finding the Fourth Proportional to 279,892.68, 386,237.32 and 159,017.18

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Solution

The fourth proportional to 279,892.68, 386,237.32 and 159,017.18 is: 219,435.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,892.68 : 386,237.32 = 159,017.18 : x
  2. Step 2: Convert to fraction form
    279,892.68/386,237.32 = 159,017.18/x
  3. Step 3: Cross multiply
    279,892.68x = 386,237.32 × 159,017.18
  4. Step 4: Simplify right side
    279,892.68x = 61,418,369,437.16
  5. Step 5: Solve for x
    x = 61,418,369,437.16/279,892.68
  6. Step 6: Final answer
    x = 219,435.43

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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.