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Finding the Fourth Proportional to 215,221.76, 296,829.16 and 191,040.38

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Solution

The fourth proportional to 215,221.76, 296,829.16 and 191,040.38 is: 263,478.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,221.76 : 296,829.16 = 191,040.38 : x
  2. Step 2: Convert to fraction form
    215,221.76/296,829.16 = 191,040.38/x
  3. Step 3: Cross multiply
    215,221.76x = 296,829.16 × 191,040.38
  4. Step 4: Simplify right side
    215,221.76x = 56,706,355,521.48
  5. Step 5: Solve for x
    x = 56,706,355,521.48/215,221.76
  6. Step 6: Final answer
    x = 263,478.73

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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.