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Finding the Fourth Proportional to 217,217.40, 325,826.10 and 99,119.40

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Solution

The fourth proportional to 217,217.40, 325,826.10 and 99,119.40 is: 148,679.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,217.40 : 325,826.10 = 99,119.40 : x
  2. Step 2: Convert to fraction form
    217,217.40/325,826.10 = 99,119.40/x
  3. Step 3: Cross multiply
    217,217.40x = 325,826.10 × 99,119.40
  4. Step 4: Simplify right side
    217,217.40x = 32,295,687,536.34
  5. Step 5: Solve for x
    x = 32,295,687,536.34/217,217.40
  6. Step 6: Final answer
    x = 148,679.10

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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.