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Finding the Fourth Proportional to 379,663.20, 569,494.80 and 240,040.80

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Solution

The fourth proportional to 379,663.20, 569,494.80 and 240,040.80 is: 360,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,663.20 : 569,494.80 = 240,040.80 : x
  2. Step 2: Convert to fraction form
    379,663.20/569,494.80 = 240,040.80/x
  3. Step 3: Cross multiply
    379,663.20x = 569,494.80 × 240,040.80
  4. Step 4: Simplify right side
    379,663.20x = 136,701,987,387.84
  5. Step 5: Solve for x
    x = 136,701,987,387.84/379,663.20
  6. Step 6: Final answer
    x = 360,061.20

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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.