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Finding the Fourth Proportional to 312,174.83, 430,801.26 and 168,934.86

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Solution

The fourth proportional to 312,174.83, 430,801.26 and 168,934.86 is: 233,130.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,174.83 : 430,801.26 = 168,934.86 : x
  2. Step 2: Convert to fraction form
    312,174.83/430,801.26 = 168,934.86/x
  3. Step 3: Cross multiply
    312,174.83x = 430,801.26 × 168,934.86
  4. Step 4: Simplify right side
    312,174.83x = 72,777,350,545.92
  5. Step 5: Solve for x
    x = 72,777,350,545.92/312,174.83
  6. Step 6: Final answer
    x = 233,130.11

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1.5x scale

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.