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Finding the Fourth Proportional to 357,177.62, 535,393.82 and 120,438.92

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Solution

The fourth proportional to 357,177.62, 535,393.82 and 120,438.92 is: 180,532.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,177.62 : 535,393.82 = 120,438.92 : x
  2. Step 2: Convert to fraction form
    357,177.62/535,393.82 = 120,438.92/x
  3. Step 3: Cross multiply
    357,177.62x = 535,393.82 × 120,438.92
  4. Step 4: Simplify right side
    357,177.62x = 64,482,253,455.47
  5. Step 5: Solve for x
    x = 64,482,253,455.47/357,177.62
  6. Step 6: Final answer
    x = 180,532.74

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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.