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Finding the Fourth Proportional to 215,846.90, 324,061.95 and 137,114.90

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Solution

The fourth proportional to 215,846.90, 324,061.95 and 137,114.90 is: 205,857.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,846.90 : 324,061.95 = 137,114.90 : x
  2. Step 2: Convert to fraction form
    215,846.90/324,061.95 = 137,114.90/x
  3. Step 3: Cross multiply
    215,846.90x = 324,061.95 × 137,114.90
  4. Step 4: Simplify right side
    215,846.90x = 44,433,721,868.06
  5. Step 5: Solve for x
    x = 44,433,721,868.06/215,846.90
  6. Step 6: Final answer
    x = 205,857.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.