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Finding the Fourth Proportional to 398,599.17, 597,900.92 and 118,118.85

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Solution

The fourth proportional to 398,599.17, 597,900.92 and 118,118.85 is: 177,178.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,599.17 : 597,900.92 = 118,118.85 : x
  2. Step 2: Convert to fraction form
    398,599.17/597,900.92 = 118,118.85/x
  3. Step 3: Cross multiply
    398,599.17x = 597,900.92 × 118,118.85
  4. Step 4: Simplify right side
    398,599.17x = 70,623,368,493.75
  5. Step 5: Solve for x
    x = 70,623,368,493.75/398,599.17
  6. Step 6: Final answer
    x = 177,178.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.