Home / 217,812.30-326,718.45-129,020.10

Finding the Fourth Proportional to 217,812.30, 326,718.45 and 129,020.10

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Solution

The fourth proportional to 217,812.30, 326,718.45 and 129,020.10 is: 193,530.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,812.30 : 326,718.45 = 129,020.10 : x
  2. Step 2: Convert to fraction form
    217,812.30/326,718.45 = 129,020.10/x
  3. Step 3: Cross multiply
    217,812.30x = 326,718.45 × 129,020.10
  4. Step 4: Simplify right side
    217,812.30x = 42,153,247,090.85
  5. Step 5: Solve for x
    x = 42,153,247,090.85/217,812.30
  6. Step 6: Final answer
    x = 193,530.15

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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.