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Finding the Fourth Proportional to 251,520.48, 347,092.56 and 138,340.80

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Solution

The fourth proportional to 251,520.48, 347,092.56 and 138,340.80 is: 190,907.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,520.48 : 347,092.56 = 138,340.80 : x
  2. Step 2: Convert to fraction form
    251,520.48/347,092.56 = 138,340.80/x
  3. Step 3: Cross multiply
    251,520.48x = 347,092.56 × 138,340.80
  4. Step 4: Simplify right side
    251,520.48x = 48,017,062,424.45
  5. Step 5: Solve for x
    x = 48,017,062,424.45/251,520.48
  6. Step 6: Final answer
    x = 190,907.17

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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.