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Finding the Fourth Proportional to 318,344.64, 439,306.43 and 175,104.67

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Solution

The fourth proportional to 318,344.64, 439,306.43 and 175,104.67 is: 241,639.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,344.64 : 439,306.43 = 175,104.67 : x
  2. Step 2: Convert to fraction form
    318,344.64/439,306.43 = 175,104.67/x
  3. Step 3: Cross multiply
    318,344.64x = 439,306.43 × 175,104.67
  4. Step 4: Simplify right side
    318,344.64x = 76,924,607,454.03
  5. Step 5: Solve for x
    x = 76,924,607,454.03/318,344.64
  6. Step 6: Final answer
    x = 241,639.40

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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.