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Finding the Fourth Proportional to 318,401.30, 439,397.42 and 182,432.51

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Solution

The fourth proportional to 318,401.30, 439,397.42 and 182,432.51 is: 251,758.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,401.30 : 439,397.42 = 182,432.51 : x
  2. Step 2: Convert to fraction form
    318,401.30/439,397.42 = 182,432.51/x
  3. Step 3: Cross multiply
    318,401.30x = 439,397.42 × 182,432.51
  4. Step 4: Simplify right side
    318,401.30x = 80,160,374,404.46
  5. Step 5: Solve for x
    x = 80,160,374,404.46/318,401.30
  6. Step 6: Final answer
    x = 251,758.95

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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.