Home / 272,386.80-408,580.20-209,328.30

Finding the Fourth Proportional to 272,386.80, 408,580.20 and 209,328.30

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Solution

The fourth proportional to 272,386.80, 408,580.20 and 209,328.30 is: 313,992.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,386.80 : 408,580.20 = 209,328.30 : x
  2. Step 2: Convert to fraction form
    272,386.80/408,580.20 = 209,328.30/x
  3. Step 3: Cross multiply
    272,386.80x = 408,580.20 × 209,328.30
  4. Step 4: Simplify right side
    272,386.80x = 85,527,398,679.66
  5. Step 5: Solve for x
    x = 85,527,398,679.66/272,386.80
  6. Step 6: Final answer
    x = 313,992.45

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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.