Home / 240,639.20-331,936.81-154,569.20

Finding the Fourth Proportional to 240,639.20, 331,936.81 and 154,569.20

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Solution

The fourth proportional to 240,639.20, 331,936.81 and 154,569.20 is: 213,212.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,639.20 : 331,936.81 = 154,569.20 : x
  2. Step 2: Convert to fraction form
    240,639.20/331,936.81 = 154,569.20/x
  3. Step 3: Cross multiply
    240,639.20x = 331,936.81 × 154,569.20
  4. Step 4: Simplify right side
    240,639.20x = 51,307,207,615.67
  5. Step 5: Solve for x
    x = 51,307,207,615.67/240,639.20
  6. Step 6: Final answer
    x = 213,212.18

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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.