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Finding the Fourth Proportional to 357,180.37, 535,630.92 and 129,421.89

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Solution

The fourth proportional to 357,180.37, 535,630.92 and 129,421.89 is: 194,082.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,180.37 : 535,630.92 = 129,421.89 : x
  2. Step 2: Convert to fraction form
    357,180.37/535,630.92 = 129,421.89/x
  3. Step 3: Cross multiply
    357,180.37x = 535,630.92 × 129,421.89
  4. Step 4: Simplify right side
    357,180.37x = 69,322,366,008.84
  5. Step 5: Solve for x
    x = 69,322,366,008.84/357,180.37
  6. Step 6: Final answer
    x = 194,082.24

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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.