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Finding the Fourth Proportional to 318,414.16, 439,412.34 and 175,184.56

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Solution

The fourth proportional to 318,414.16, 439,412.34 and 175,184.56 is: 241,755.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,414.16 : 439,412.34 = 175,184.56 : x
  2. Step 2: Convert to fraction form
    318,414.16/439,412.34 = 175,184.56/x
  3. Step 3: Cross multiply
    318,414.16x = 439,412.34 × 175,184.56
  4. Step 4: Simplify right side
    318,414.16x = 76,978,257,441.47
  5. Step 5: Solve for x
    x = 76,978,257,441.47/318,414.16
  6. Step 6: Final answer
    x = 241,755.13

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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.