Home / 387,544.64-581,003.28-121,168.04

Finding the Fourth Proportional to 387,544.64, 581,003.28 and 121,168.04

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Solution

The fourth proportional to 387,544.64, 581,003.28 and 121,168.04 is: 181,653.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,544.64 : 581,003.28 = 121,168.04 : x
  2. Step 2: Convert to fraction form
    387,544.64/581,003.28 = 121,168.04/x
  3. Step 3: Cross multiply
    387,544.64x = 581,003.28 × 121,168.04
  4. Step 4: Simplify right side
    387,544.64x = 70,399,025,766.15
  5. Step 5: Solve for x
    x = 70,399,025,766.15/387,544.64
  6. Step 6: Final answer
    x = 181,653.98

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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.