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Finding the Fourth Proportional to 408,399.17, 612,597.53 and 108,881.01

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Solution

The fourth proportional to 408,399.17, 612,597.53 and 108,881.01 is: 163,321.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,399.17 : 612,597.53 = 108,881.01 : x
  2. Step 2: Convert to fraction form
    408,399.17/612,597.53 = 108,881.01/x
  3. Step 3: Cross multiply
    408,399.17x = 612,597.53 × 108,881.01
  4. Step 4: Simplify right side
    408,399.17x = 66,700,238,062.11
  5. Step 5: Solve for x
    x = 66,700,238,062.11/408,399.17
  6. Step 6: Final answer
    x = 163,321.19

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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.