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Finding the Fourth Proportional to 325,854.10, 488,781.15 and 166,421.80

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Solution

The fourth proportional to 325,854.10, 488,781.15 and 166,421.80 is: 249,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,854.10 : 488,781.15 = 166,421.80 : x
  2. Step 2: Convert to fraction form
    325,854.10/488,781.15 = 166,421.80/x
  3. Step 3: Cross multiply
    325,854.10x = 488,781.15 × 166,421.80
  4. Step 4: Simplify right side
    325,854.10x = 81,343,838,789.07
  5. Step 5: Solve for x
    x = 81,343,838,789.07/325,854.10
  6. Step 6: Final answer
    x = 249,632.70

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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.