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Finding the Fourth Proportional to 279,432.83, 385,595.33 and 158,574.12

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Solution

The fourth proportional to 279,432.83, 385,595.33 and 158,574.12 is: 218,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,432.83 : 385,595.33 = 158,574.12 : x
  2. Step 2: Convert to fraction form
    279,432.83/385,595.33 = 158,574.12/x
  3. Step 3: Cross multiply
    279,432.83x = 385,595.33 × 158,574.12
  4. Step 4: Simplify right side
    279,432.83x = 61,145,437,892.01
  5. Step 5: Solve for x
    x = 61,145,437,892.01/279,432.83
  6. Step 6: Final answer
    x = 218,819.80

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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.