Home / 258,839.40-388,314.30-146,572.20

Finding the Fourth Proportional to 258,839.40, 388,314.30 and 146,572.20

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Solution

The fourth proportional to 258,839.40, 388,314.30 and 146,572.20 is: 219,889.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,839.40 : 388,314.30 = 146,572.20 : x
  2. Step 2: Convert to fraction form
    258,839.40/388,314.30 = 146,572.20/x
  3. Step 3: Cross multiply
    258,839.40x = 388,314.30 × 146,572.20
  4. Step 4: Simplify right side
    258,839.40x = 56,916,081,242.46
  5. Step 5: Solve for x
    x = 56,916,081,242.46/258,839.40
  6. Step 6: Final answer
    x = 219,889.56

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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.