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Finding the Fourth Proportional to 439,729.80, 659,397.60 and 173,353.20

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Solution

The fourth proportional to 439,729.80, 659,397.60 and 173,353.20 is: 259,952.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,729.80 : 659,397.60 = 173,353.20 : x
  2. Step 2: Convert to fraction form
    439,729.80/659,397.60 = 173,353.20/x
  3. Step 3: Cross multiply
    439,729.80x = 659,397.60 × 173,353.20
  4. Step 4: Simplify right side
    439,729.80x = 114,308,684,032.32
  5. Step 5: Solve for x
    x = 114,308,684,032.32/439,729.80
  6. Step 6: Final answer
    x = 259,952.10

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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.