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Finding the Fourth Proportional to 265,655.60, 398,710.20 and 107,997.20

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Solution

The fourth proportional to 265,655.60, 398,710.20 and 107,997.20 is: 162,088.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,655.60 : 398,710.20 = 107,997.20 : x
  2. Step 2: Convert to fraction form
    265,655.60/398,710.20 = 107,997.20/x
  3. Step 3: Cross multiply
    265,655.60x = 398,710.20 × 107,997.20
  4. Step 4: Simplify right side
    265,655.60x = 43,059,585,211.44
  5. Step 5: Solve for x
    x = 43,059,585,211.44/265,655.60
  6. Step 6: Final answer
    x = 162,088.00

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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.