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Finding the Fourth Proportional to 323,803.29, 485,661.18 and 87,160.17

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Solution

The fourth proportional to 323,803.29, 485,661.18 and 87,160.17 is: 130,728.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,803.29 : 485,661.18 = 87,160.17 : x
  2. Step 2: Convert to fraction form
    323,803.29/485,661.18 = 87,160.17/x
  3. Step 3: Cross multiply
    323,803.29x = 485,661.18 × 87,160.17
  4. Step 4: Simplify right side
    323,803.29x = 42,330,313,159.28
  5. Step 5: Solve for x
    x = 42,330,313,159.28/323,803.29
  6. Step 6: Final answer
    x = 130,728.48

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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.