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Finding the Fourth Proportional to 318,670.32, 439,768 and 175,432.76

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Solution

The fourth proportional to 318,670.32, 439,768 and 175,432.76 is: 242,098.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,670.32 : 439,768 = 175,432.76 : x
  2. Step 2: Convert to fraction form
    318,670.32/439,768 = 175,432.76/x
  3. Step 3: Cross multiply
    318,670.32x = 439,768 × 175,432.76
  4. Step 4: Simplify right side
    318,670.32x = 77,149,713,999.68
  5. Step 5: Solve for x
    x = 77,149,713,999.68/318,670.32
  6. Step 6: Final answer
    x = 242,098.84

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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.