Home / 258,138.20-387,207.30-242,586.20

Finding the Fourth Proportional to 258,138.20, 387,207.30 and 242,586.20

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Solution

The fourth proportional to 258,138.20, 387,207.30 and 242,586.20 is: 363,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,138.20 : 387,207.30 = 242,586.20 : x
  2. Step 2: Convert to fraction form
    258,138.20/387,207.30 = 242,586.20/x
  3. Step 3: Cross multiply
    258,138.20x = 387,207.30 × 242,586.20
  4. Step 4: Simplify right side
    258,138.20x = 93,931,147,519.26
  5. Step 5: Solve for x
    x = 93,931,147,519.26/258,138.20
  6. Step 6: Final answer
    x = 363,879.30

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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.