Home / 217,739.20-326,647.07-99,422.50

Finding the Fourth Proportional to 217,739.20, 326,647.07 and 99,422.50

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Solution

The fourth proportional to 217,739.20, 326,647.07 and 99,422.50 is: 149,151.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,739.20 : 326,647.07 = 99,422.50 : x
  2. Step 2: Convert to fraction form
    217,739.20/326,647.07 = 99,422.50/x
  3. Step 3: Cross multiply
    217,739.20x = 326,647.07 × 99,422.50
  4. Step 4: Simplify right side
    217,739.20x = 32,476,068,317.08
  5. Step 5: Solve for x
    x = 32,476,068,317.08/217,739.20
  6. Step 6: Final answer
    x = 149,151.22

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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.