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Finding the Fourth Proportional to 391,486.92, 540,242.76 and 230,352.41

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Solution

The fourth proportional to 391,486.92, 540,242.76 and 230,352.41 is: 317,880.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,486.92 : 540,242.76 = 230,352.41 : x
  2. Step 2: Convert to fraction form
    391,486.92/540,242.76 = 230,352.41/x
  3. Step 3: Cross multiply
    391,486.92x = 540,242.76 × 230,352.41
  4. Step 4: Simplify right side
    391,486.92x = 124,446,220,926.62
  5. Step 5: Solve for x
    x = 124,446,220,926.62/391,486.92
  6. Step 6: Final answer
    x = 317,880.91

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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.