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Finding the Fourth Proportional to 308,528.75, 425,761.16 and 172,562.96

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Solution

The fourth proportional to 308,528.75, 425,761.16 and 172,562.96 is: 238,132.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,528.75 : 425,761.16 = 172,562.96 : x
  2. Step 2: Convert to fraction form
    308,528.75/425,761.16 = 172,562.96/x
  3. Step 3: Cross multiply
    308,528.75x = 425,761.16 × 172,562.96
  4. Step 4: Simplify right side
    308,528.75x = 73,470,603,031.01
  5. Step 5: Solve for x
    x = 73,470,603,031.01/308,528.75
  6. Step 6: Final answer
    x = 238,132.12

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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.