Home / 220,639.14-331,038.90-108,307.53

Finding the Fourth Proportional to 220,639.14, 331,038.90 and 108,307.53

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Solution

The fourth proportional to 220,639.14, 331,038.90 and 108,307.53 is: 162,500.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,639.14 : 331,038.90 = 108,307.53 : x
  2. Step 2: Convert to fraction form
    220,639.14/331,038.90 = 108,307.53/x
  3. Step 3: Cross multiply
    220,639.14x = 331,038.90 × 108,307.53
  4. Step 4: Simplify right side
    220,639.14x = 35,854,005,592.92
  5. Step 5: Solve for x
    x = 35,854,005,592.92/220,639.14
  6. Step 6: Final answer
    x = 162,500.66

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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.