Home / 218,312.10-326,812.05-129,519.90

Finding the Fourth Proportional to 218,312.10, 326,812.05 and 129,519.90

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Solution

The fourth proportional to 218,312.10, 326,812.05 and 129,519.90 is: 193,890.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,312.10 : 326,812.05 = 129,519.90 : x
  2. Step 2: Convert to fraction form
    218,312.10/326,812.05 = 129,519.90/x
  3. Step 3: Cross multiply
    218,312.10x = 326,812.05 × 129,519.90
  4. Step 4: Simplify right side
    218,312.10x = 42,328,664,034.80
  5. Step 5: Solve for x
    x = 42,328,664,034.80/218,312.10
  6. Step 6: Final answer
    x = 193,890.60

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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.