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Finding the Fourth Proportional to 312,367.02, 431,064.54 and 169,126.62

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Solution

The fourth proportional to 312,367.02, 431,064.54 and 169,126.62 is: 233,393.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,367.02 : 431,064.54 = 169,126.62 : x
  2. Step 2: Convert to fraction form
    312,367.02/431,064.54 = 169,126.62/x
  3. Step 3: Cross multiply
    312,367.02x = 431,064.54 × 169,126.62
  4. Step 4: Simplify right side
    312,367.02x = 72,904,488,652.05
  5. Step 5: Solve for x
    x = 72,904,488,652.05/312,367.02
  6. Step 6: Final answer
    x = 233,393.68

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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.