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Finding the Fourth Proportional to 439,645.40, 659,686.80 and 173,414.60

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Solution

The fourth proportional to 439,645.40, 659,686.80 and 173,414.60 is: 260,208.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,645.40 : 659,686.80 = 173,414.60 : x
  2. Step 2: Convert to fraction form
    439,645.40/659,686.80 = 173,414.60/x
  3. Step 3: Cross multiply
    439,645.40x = 659,686.80 × 173,414.60
  4. Step 4: Simplify right side
    439,645.40x = 114,399,322,547.28
  5. Step 5: Solve for x
    x = 114,399,322,547.28/439,645.40
  6. Step 6: Final answer
    x = 260,208.16

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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.