Home / 243,091.20-364,852.80-143,126.40

Finding the Fourth Proportional to 243,091.20, 364,852.80 and 143,126.40

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Solution

The fourth proportional to 243,091.20, 364,852.80 and 143,126.40 is: 214,816.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,091.20 : 364,852.80 = 143,126.40 : x
  2. Step 2: Convert to fraction form
    243,091.20/364,852.80 = 143,126.40/x
  3. Step 3: Cross multiply
    243,091.20x = 364,852.80 × 143,126.40
  4. Step 4: Simplify right side
    243,091.20x = 52,220,067,793.92
  5. Step 5: Solve for x
    x = 52,220,067,793.92/243,091.20
  6. Step 6: Final answer
    x = 214,816.78

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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.