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Finding the Fourth Proportional to 353,443.28, 530,147.64 and 131,810

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Solution

The fourth proportional to 353,443.28, 530,147.64 and 131,810 is: 197,708.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,443.28 : 530,147.64 = 131,810 : x
  2. Step 2: Convert to fraction form
    353,443.28/530,147.64 = 131,810/x
  3. Step 3: Cross multiply
    353,443.28x = 530,147.64 × 131,810
  4. Step 4: Simplify right side
    353,443.28x = 69,878,760,428.40
  5. Step 5: Solve for x
    x = 69,878,760,428.40/353,443.28
  6. Step 6: Final answer
    x = 197,708.56

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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.