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Finding the Fourth Proportional to 252,957.48, 349,085.90 and 138,240.98

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Solution

The fourth proportional to 252,957.48, 349,085.90 and 138,240.98 is: 190,775.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,957.48 : 349,085.90 = 138,240.98 : x
  2. Step 2: Convert to fraction form
    252,957.48/349,085.90 = 138,240.98/x
  3. Step 3: Cross multiply
    252,957.48x = 349,085.90 × 138,240.98
  4. Step 4: Simplify right side
    252,957.48x = 48,257,976,920.18
  5. Step 5: Solve for x
    x = 48,257,976,920.18/252,957.48
  6. Step 6: Final answer
    x = 190,775.05

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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.