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Finding the Fourth Proportional to 315,489.68, 435,393.48 and 172,263.04

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Solution

The fourth proportional to 315,489.68, 435,393.48 and 172,263.04 is: 237,732.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,489.68 : 435,393.48 = 172,263.04 : x
  2. Step 2: Convert to fraction form
    315,489.68/435,393.48 = 172,263.04/x
  3. Step 3: Cross multiply
    315,489.68x = 435,393.48 × 172,263.04
  4. Step 4: Simplify right side
    315,489.68x = 75,002,204,460.98
  5. Step 5: Solve for x
    x = 75,002,204,460.98/315,489.68
  6. Step 6: Final answer
    x = 237,732.67

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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.