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Finding the Fourth Proportional to 391,648.87, 540,374.29 and 230,473.65

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Solution

The fourth proportional to 391,648.87, 540,374.29 and 230,473.65 is: 317,994.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,648.87 : 540,374.29 = 230,473.65 : x
  2. Step 2: Convert to fraction form
    391,648.87/540,374.29 = 230,473.65/x
  3. Step 3: Cross multiply
    391,648.87x = 540,374.29 × 230,473.65
  4. Step 4: Simplify right side
    391,648.87x = 124,542,036,432.68
  5. Step 5: Solve for x
    x = 124,542,036,432.68/391,648.87
  6. Step 6: Final answer
    x = 317,994.12

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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.