Home / 242,638.20-363,957.30-218,143.80

Finding the Fourth Proportional to 242,638.20, 363,957.30 and 218,143.80

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Solution

The fourth proportional to 242,638.20, 363,957.30 and 218,143.80 is: 327,215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,638.20 : 363,957.30 = 218,143.80 : x
  2. Step 2: Convert to fraction form
    242,638.20/363,957.30 = 218,143.80/x
  3. Step 3: Cross multiply
    242,638.20x = 363,957.30 × 218,143.80
  4. Step 4: Simplify right side
    242,638.20x = 79,395,028,459.74
  5. Step 5: Solve for x
    x = 79,395,028,459.74/242,638.20
  6. Step 6: Final answer
    x = 327,215.70

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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.