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Finding the Fourth Proportional to 265,656.60, 398,711.70 and 107,998.20

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Solution

The fourth proportional to 265,656.60, 398,711.70 and 107,998.20 is: 162,089.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,656.60 : 398,711.70 = 107,998.20 : x
  2. Step 2: Convert to fraction form
    265,656.60/398,711.70 = 107,998.20/x
  3. Step 3: Cross multiply
    265,656.60x = 398,711.70 × 107,998.20
  4. Step 4: Simplify right side
    265,656.60x = 43,060,145,918.94
  5. Step 5: Solve for x
    x = 43,060,145,918.94/265,656.60
  6. Step 6: Final answer
    x = 162,089.50

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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.