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Finding the Fourth Proportional to 312,248.32, 468,401.86 and 87,607.88

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Solution

The fourth proportional to 312,248.32, 468,401.86 and 87,607.88 is: 131,420.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,248.32 : 468,401.86 = 87,607.88 : x
  2. Step 2: Convert to fraction form
    312,248.32/468,401.86 = 87,607.88/x
  3. Step 3: Cross multiply
    312,248.32x = 468,401.86 × 87,607.88
  4. Step 4: Simplify right side
    312,248.32x = 41,035,693,942.66
  5. Step 5: Solve for x
    x = 41,035,693,942.66/312,248.32
  6. Step 6: Final answer
    x = 131,420.06

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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.