Home / 272,823.20-409,234.80-139,659.20

Finding the Fourth Proportional to 272,823.20, 409,234.80 and 139,659.20

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Solution

The fourth proportional to 272,823.20, 409,234.80 and 139,659.20 is: 209,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,823.20 : 409,234.80 = 139,659.20 : x
  2. Step 2: Convert to fraction form
    272,823.20/409,234.80 = 139,659.20/x
  3. Step 3: Cross multiply
    272,823.20x = 409,234.80 × 139,659.20
  4. Step 4: Simplify right side
    272,823.20x = 57,153,404,780.16
  5. Step 5: Solve for x
    x = 57,153,404,780.16/272,823.20
  6. Step 6: Final answer
    x = 209,488.80

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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.