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Finding the Fourth Proportional to 347,613.97, 479,459.45 and 319,025.78

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Solution

The fourth proportional to 347,613.97, 479,459.45 and 319,025.78 is: 440,028.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,613.97 : 479,459.45 = 319,025.78 : x
  2. Step 2: Convert to fraction form
    347,613.97/479,459.45 = 319,025.78/x
  3. Step 3: Cross multiply
    347,613.97x = 479,459.45 × 319,025.78
  4. Step 4: Simplify right side
    347,613.97x = 152,959,925,014.62
  5. Step 5: Solve for x
    x = 152,959,925,014.62/347,613.97
  6. Step 6: Final answer
    x = 440,028.14

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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.