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Finding the Fourth Proportional to 391,209.84, 540,200.52 and 248,223.60

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Solution

The fourth proportional to 391,209.84, 540,200.52 and 248,223.60 is: 342,758.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,209.84 : 540,200.52 = 248,223.60 : x
  2. Step 2: Convert to fraction form
    391,209.84/540,200.52 = 248,223.60/x
  3. Step 3: Cross multiply
    391,209.84x = 540,200.52 × 248,223.60
  4. Step 4: Simplify right side
    391,209.84x = 134,090,517,796.27
  5. Step 5: Solve for x
    x = 134,090,517,796.27/391,209.84
  6. Step 6: Final answer
    x = 342,758.55

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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.