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Finding the Fourth Proportional to 311,775.71, 467,664.53 and 87,134.66

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Solution

The fourth proportional to 311,775.71, 467,664.53 and 87,134.66 is: 130,702.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,775.71 : 467,664.53 = 87,134.66 : x
  2. Step 2: Convert to fraction form
    311,775.71/467,664.53 = 87,134.66/x
  3. Step 3: Cross multiply
    311,775.71x = 467,664.53 × 87,134.66
  4. Step 4: Simplify right side
    311,775.71x = 40,749,788,795.36
  5. Step 5: Solve for x
    x = 40,749,788,795.36/311,775.71
  6. Step 6: Final answer
    x = 130,702.26

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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.