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Finding the Fourth Proportional to 238,712.67, 357,992.46 and 78,752.76

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Solution

The fourth proportional to 238,712.67, 357,992.46 and 78,752.76 is: 118,103.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,712.67 : 357,992.46 = 78,752.76 : x
  2. Step 2: Convert to fraction form
    238,712.67/357,992.46 = 78,752.76/x
  3. Step 3: Cross multiply
    238,712.67x = 357,992.46 × 78,752.76
  4. Step 4: Simplify right side
    238,712.67x = 28,192,892,941.72
  5. Step 5: Solve for x
    x = 28,192,892,941.72/238,712.67
  6. Step 6: Final answer
    x = 118,103.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.