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Finding the Fourth Proportional to 318,392.78, 439,372.84 and 175,152.86

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Solution

The fourth proportional to 318,392.78, 439,372.84 and 175,152.86 is: 241,705.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,392.78 : 439,372.84 = 175,152.86 : x
  2. Step 2: Convert to fraction form
    318,392.78/439,372.84 = 175,152.86/x
  3. Step 3: Cross multiply
    318,392.78x = 439,372.84 × 175,152.86
  4. Step 4: Simplify right side
    318,392.78x = 76,957,406,897.58
  5. Step 5: Solve for x
    x = 76,957,406,897.58/318,392.78
  6. Step 6: Final answer
    x = 241,705.88

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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.