Home / 308,965.20-463,521.78-128,950.52

Finding the Fourth Proportional to 308,965.20, 463,521.78 and 128,950.52

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Solution

The fourth proportional to 308,965.20, 463,521.78 and 128,950.52 is: 193,456.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,965.20 : 463,521.78 = 128,950.52 : x
  2. Step 2: Convert to fraction form
    308,965.20/463,521.78 = 128,950.52/x
  3. Step 3: Cross multiply
    308,965.20x = 463,521.78 × 128,950.52
  4. Step 4: Simplify right side
    308,965.20x = 59,771,374,562.33
  5. Step 5: Solve for x
    x = 59,771,374,562.33/308,965.20
  6. Step 6: Final answer
    x = 193,456.66

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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.