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Finding the Fourth Proportional to 360,163.20, 539,914.56 and 138,380.16

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Solution

The fourth proportional to 360,163.20, 539,914.56 and 138,380.16 is: 207,443.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,163.20 : 539,914.56 = 138,380.16 : x
  2. Step 2: Convert to fraction form
    360,163.20/539,914.56 = 138,380.16/x
  3. Step 3: Cross multiply
    360,163.20x = 539,914.56 × 138,380.16
  4. Step 4: Simplify right side
    360,163.20x = 74,713,463,199.13
  5. Step 5: Solve for x
    x = 74,713,463,199.13/360,163.20
  6. Step 6: Final answer
    x = 207,443.36

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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.