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Finding the Fourth Proportional to 391,384.81, 540,101.90 and 230,250.24

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Solution

The fourth proportional to 391,384.81, 540,101.90 and 230,250.24 is: 317,739.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,384.81 : 540,101.90 = 230,250.24 : x
  2. Step 2: Convert to fraction form
    391,384.81/540,101.90 = 230,250.24/x
  3. Step 3: Cross multiply
    391,384.81x = 540,101.90 × 230,250.24
  4. Step 4: Simplify right side
    391,384.81x = 124,358,589,398.95
  5. Step 5: Solve for x
    x = 124,358,589,398.95/391,384.81
  6. Step 6: Final answer
    x = 317,739.95

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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.