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Finding the Fourth Proportional to 251,915.76, 347,614.20 and 143,012.88

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Solution

The fourth proportional to 251,915.76, 347,614.20 and 143,012.88 is: 197,341.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,915.76 : 347,614.20 = 143,012.88 : x
  2. Step 2: Convert to fraction form
    251,915.76/347,614.20 = 143,012.88/x
  3. Step 3: Cross multiply
    251,915.76x = 347,614.20 × 143,012.88
  4. Step 4: Simplify right side
    251,915.76x = 49,713,307,870.90
  5. Step 5: Solve for x
    x = 49,713,307,870.90/251,915.76
  6. Step 6: Final answer
    x = 197,341.00

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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.