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Finding the Fourth Proportional to 391,396.92, 540,129.90 and 230,258.04

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Solution

The fourth proportional to 391,396.92, 540,129.90 and 230,258.04 is: 317,757.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,396.92 : 540,129.90 = 230,258.04 : x
  2. Step 2: Convert to fraction form
    391,396.92/540,129.90 = 230,258.04/x
  3. Step 3: Cross multiply
    391,396.92x = 540,129.90 × 230,258.04
  4. Step 4: Simplify right side
    391,396.92x = 124,369,252,119.40
  5. Step 5: Solve for x
    x = 124,369,252,119.40/391,396.92
  6. Step 6: Final answer
    x = 317,757.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.