Home / 305,192.82-457,701.75-91,981.38

Finding the Fourth Proportional to 305,192.82, 457,701.75 and 91,981.38

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Solution

The fourth proportional to 305,192.82, 457,701.75 and 91,981.38 is: 137,945.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,192.82 : 457,701.75 = 91,981.38 : x
  2. Step 2: Convert to fraction form
    305,192.82/457,701.75 = 91,981.38/x
  3. Step 3: Cross multiply
    305,192.82x = 457,701.75 × 91,981.38
  4. Step 4: Simplify right side
    305,192.82x = 42,100,038,593.42
  5. Step 5: Solve for x
    x = 42,100,038,593.42/305,192.82
  6. Step 6: Final answer
    x = 137,945.70

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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.