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Finding the Fourth Proportional to 391,422.60, 540,154.03 and 230,288.02

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Solution

The fourth proportional to 391,422.60, 540,154.03 and 230,288.02 is: 317,792.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,422.60 : 540,154.03 = 230,288.02 : x
  2. Step 2: Convert to fraction form
    391,422.60/540,154.03 = 230,288.02/x
  3. Step 3: Cross multiply
    391,422.60x = 540,154.03 × 230,288.02
  4. Step 4: Simplify right side
    391,422.60x = 124,391,002,063.72
  5. Step 5: Solve for x
    x = 124,391,002,063.72/391,422.60
  6. Step 6: Final answer
    x = 317,792.08

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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.