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Finding the Fourth Proportional to 247,275.36, 370,942.78 and 87,318.38

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Solution

The fourth proportional to 247,275.36, 370,942.78 and 87,318.38 is: 130,988.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,275.36 : 370,942.78 = 87,318.38 : x
  2. Step 2: Convert to fraction form
    247,275.36/370,942.78 = 87,318.38/x
  3. Step 3: Cross multiply
    247,275.36x = 370,942.78 × 87,318.38
  4. Step 4: Simplify right side
    247,275.36x = 32,390,122,622.30
  5. Step 5: Solve for x
    x = 32,390,122,622.30/247,275.36
  6. Step 6: Final answer
    x = 130,988.07

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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.