Home / 218,905.80-328,334.40-61,150.20

Finding the Fourth Proportional to 218,905.80, 328,334.40 and 61,150.20

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Solution

The fourth proportional to 218,905.80, 328,334.40 and 61,150.20 is: 91,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,905.80 : 328,334.40 = 61,150.20 : x
  2. Step 2: Convert to fraction form
    218,905.80/328,334.40 = 61,150.20/x
  3. Step 3: Cross multiply
    218,905.80x = 328,334.40 × 61,150.20
  4. Step 4: Simplify right side
    218,905.80x = 20,077,714,226.88
  5. Step 5: Solve for x
    x = 20,077,714,226.88/218,905.80
  6. Step 6: Final answer
    x = 91,718.51

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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.