Home / 217,931.23-327,388.94-129,242.91

Finding the Fourth Proportional to 217,931.23, 327,388.94 and 129,242.91

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Solution

The fourth proportional to 217,931.23, 327,388.94 and 129,242.91 is: 194,156.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,931.23 : 327,388.94 = 129,242.91 : x
  2. Step 2: Convert to fraction form
    217,931.23/327,388.94 = 129,242.91/x
  3. Step 3: Cross multiply
    217,931.23x = 327,388.94 × 129,242.91
  4. Step 4: Simplify right side
    217,931.23x = 42,312,699,630.52
  5. Step 5: Solve for x
    x = 42,312,699,630.52/217,931.23
  6. Step 6: Final answer
    x = 194,156.20

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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.