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Finding the Fourth Proportional to 391,601.02, 540,398.90 and 230,465.56

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Solution

The fourth proportional to 391,601.02, 540,398.90 and 230,465.56 is: 318,036.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,601.02 : 540,398.90 = 230,465.56 : x
  2. Step 2: Convert to fraction form
    391,601.02/540,398.90 = 230,465.56/x
  3. Step 3: Cross multiply
    391,601.02x = 540,398.90 × 230,465.56
  4. Step 4: Simplify right side
    391,601.02x = 124,543,335,111.88
  5. Step 5: Solve for x
    x = 124,543,335,111.88/391,601.02
  6. Step 6: Final answer
    x = 318,036.29

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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.