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Finding the Fourth Proportional to 391,493.55, 540,235.52 and 230,317.46

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Solution

The fourth proportional to 391,493.55, 540,235.52 and 230,317.46 is: 317,823.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,493.55 : 540,235.52 = 230,317.46 : x
  2. Step 2: Convert to fraction form
    391,493.55/540,235.52 = 230,317.46/x
  3. Step 3: Cross multiply
    391,493.55x = 540,235.52 × 230,317.46
  4. Step 4: Simplify right side
    391,493.55x = 124,425,668,915.41
  5. Step 5: Solve for x
    x = 124,425,668,915.41/391,493.55
  6. Step 6: Final answer
    x = 317,823.04

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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.