Home / 272,623.20-408,934.80-139,459.20

Finding the Fourth Proportional to 272,623.20, 408,934.80 and 139,459.20

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Solution

The fourth proportional to 272,623.20, 408,934.80 and 139,459.20 is: 209,188.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,623.20 : 408,934.80 = 139,459.20 : x
  2. Step 2: Convert to fraction form
    272,623.20/408,934.80 = 139,459.20/x
  3. Step 3: Cross multiply
    272,623.20x = 408,934.80 × 139,459.20
  4. Step 4: Simplify right side
    272,623.20x = 57,029,720,060.16
  5. Step 5: Solve for x
    x = 57,029,720,060.16/272,623.20
  6. Step 6: Final answer
    x = 209,188.80

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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.