Home / 217,949.20-326,923.80-77,712.40

Finding the Fourth Proportional to 217,949.20, 326,923.80 and 77,712.40

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Solution

The fourth proportional to 217,949.20, 326,923.80 and 77,712.40 is: 116,568.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,949.20 : 326,923.80 = 77,712.40 : x
  2. Step 2: Convert to fraction form
    217,949.20/326,923.80 = 77,712.40/x
  3. Step 3: Cross multiply
    217,949.20x = 326,923.80 × 77,712.40
  4. Step 4: Simplify right side
    217,949.20x = 25,406,033,115.12
  5. Step 5: Solve for x
    x = 25,406,033,115.12/217,949.20
  6. Step 6: Final answer
    x = 116,568.60

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1.5x scale

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.