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Finding the Fourth Proportional to 395,174.46, 592,463.60 and 128,775.90

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Solution

The fourth proportional to 395,174.46, 592,463.60 and 128,775.90 is: 193,066.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,174.46 : 592,463.60 = 128,775.90 : x
  2. Step 2: Convert to fraction form
    395,174.46/592,463.60 = 128,775.90/x
  3. Step 3: Cross multiply
    395,174.46x = 592,463.60 × 128,775.90
  4. Step 4: Simplify right side
    395,174.46x = 76,295,033,307.24
  5. Step 5: Solve for x
    x = 76,295,033,307.24/395,174.46
  6. Step 6: Final answer
    x = 193,066.71

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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.