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Finding the Fourth Proportional to 251,247.28, 346,751.20 and 143,851.80

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Solution

The fourth proportional to 251,247.28, 346,751.20 and 143,851.80 is: 198,532.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,247.28 : 346,751.20 = 143,851.80 : x
  2. Step 2: Convert to fraction form
    251,247.28/346,751.20 = 143,851.80/x
  3. Step 3: Cross multiply
    251,247.28x = 346,751.20 × 143,851.80
  4. Step 4: Simplify right side
    251,247.28x = 49,880,784,272.16
  5. Step 5: Solve for x
    x = 49,880,784,272.16/251,247.28
  6. Step 6: Final answer
    x = 198,532.63

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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.