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Finding the Fourth Proportional to 252,118.01, 347,920.98 and 138,940.76

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Solution

The fourth proportional to 252,118.01, 347,920.98 and 138,940.76 is: 191,737.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,118.01 : 347,920.98 = 138,940.76 : x
  2. Step 2: Convert to fraction form
    252,118.01/347,920.98 = 138,940.76/x
  3. Step 3: Cross multiply
    252,118.01x = 347,920.98 × 138,940.76
  4. Step 4: Simplify right side
    252,118.01x = 48,340,405,381.14
  5. Step 5: Solve for x
    x = 48,340,405,381.14/252,118.01
  6. Step 6: Final answer
    x = 191,737.22

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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.