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Finding the Fourth Proportional to 445,882.32, 668,862.36 and 130,371.12

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Solution

The fourth proportional to 445,882.32, 668,862.36 and 130,371.12 is: 195,568.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,882.32 : 668,862.36 = 130,371.12 : x
  2. Step 2: Convert to fraction form
    445,882.32/668,862.36 = 130,371.12/x
  3. Step 3: Cross multiply
    445,882.32x = 668,862.36 × 130,371.12
  4. Step 4: Simplify right side
    445,882.32x = 87,200,334,999.04
  5. Step 5: Solve for x
    x = 87,200,334,999.04/445,882.32
  6. Step 6: Final answer
    x = 195,568.05

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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.