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Finding the Fourth Proportional to 279,588.38, 385,807.59 and 158,734.76

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Solution

The fourth proportional to 279,588.38, 385,807.59 and 158,734.76 is: 219,040.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,588.38 : 385,807.59 = 158,734.76 : x
  2. Step 2: Convert to fraction form
    279,588.38/385,807.59 = 158,734.76/x
  3. Step 3: Cross multiply
    279,588.38x = 385,807.59 × 158,734.76
  4. Step 4: Simplify right side
    279,588.38x = 61,241,073,275.79
  5. Step 5: Solve for x
    x = 61,241,073,275.79/279,588.38
  6. Step 6: Final answer
    x = 219,040.13

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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.