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Finding the Fourth Proportional to 391,950, 540,875.34 and 230,811.84

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Solution

The fourth proportional to 391,950, 540,875.34 and 230,811.84 is: 318,511.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,950 : 540,875.34 = 230,811.84 : x
  2. Step 2: Convert to fraction form
    391,950/540,875.34 = 230,811.84/x
  3. Step 3: Cross multiply
    391,950x = 540,875.34 × 230,811.84
  4. Step 4: Simplify right side
    391,950x = 124,840,432,436.03
  5. Step 5: Solve for x
    x = 124,840,432,436.03/391,950
  6. Step 6: Final answer
    x = 318,511.12

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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.