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Finding the Fourth Proportional to 261,771.60, 392,657.40 and 167,998.80

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Solution

The fourth proportional to 261,771.60, 392,657.40 and 167,998.80 is: 251,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,771.60 : 392,657.40 = 167,998.80 : x
  2. Step 2: Convert to fraction form
    261,771.60/392,657.40 = 167,998.80/x
  3. Step 3: Cross multiply
    261,771.60x = 392,657.40 × 167,998.80
  4. Step 4: Simplify right side
    261,771.60x = 65,965,972,011.12
  5. Step 5: Solve for x
    x = 65,965,972,011.12/261,771.60
  6. Step 6: Final answer
    x = 251,998.20

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1.5x scale

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.