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Finding the Fourth Proportional to 225,077.15, 310,571.98 and 129,565.40

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Solution

The fourth proportional to 225,077.15, 310,571.98 and 129,565.40 is: 178,780.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,077.15 : 310,571.98 = 129,565.40 : x
  2. Step 2: Convert to fraction form
    225,077.15/310,571.98 = 129,565.40/x
  3. Step 3: Cross multiply
    225,077.15x = 310,571.98 × 129,565.40
  4. Step 4: Simplify right side
    225,077.15x = 40,239,380,940.72
  5. Step 5: Solve for x
    x = 40,239,380,940.72/225,077.15
  6. Step 6: Final answer
    x = 178,780.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.