Home / 217,678.20-326,517.30-146,819.40

Finding the Fourth Proportional to 217,678.20, 326,517.30 and 146,819.40

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Solution

The fourth proportional to 217,678.20, 326,517.30 and 146,819.40 is: 220,229.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,678.20 : 326,517.30 = 146,819.40 : x
  2. Step 2: Convert to fraction form
    217,678.20/326,517.30 = 146,819.40/x
  3. Step 3: Cross multiply
    217,678.20x = 326,517.30 × 146,819.40
  4. Step 4: Simplify right side
    217,678.20x = 47,939,074,075.62
  5. Step 5: Solve for x
    x = 47,939,074,075.62/217,678.20
  6. Step 6: Final answer
    x = 220,229.10

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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.