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Finding the Fourth Proportional to 279,810.42, 386,125.29 and 158,948.70

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Solution

The fourth proportional to 279,810.42, 386,125.29 and 158,948.70 is: 219,341.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,810.42 : 386,125.29 = 158,948.70 : x
  2. Step 2: Convert to fraction form
    279,810.42/386,125.29 = 158,948.70/x
  3. Step 3: Cross multiply
    279,810.42x = 386,125.29 × 158,948.70
  4. Step 4: Simplify right side
    279,810.42x = 61,374,112,882.62
  5. Step 5: Solve for x
    x = 61,374,112,882.62/279,810.42
  6. Step 6: Final answer
    x = 219,341.77

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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.