Home / 272,610.72-408,999.48-139,585.08

Finding the Fourth Proportional to 272,610.72, 408,999.48 and 139,585.08

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Solution

The fourth proportional to 272,610.72, 408,999.48 and 139,585.08 is: 209,420.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,610.72 : 408,999.48 = 139,585.08 : x
  2. Step 2: Convert to fraction form
    272,610.72/408,999.48 = 139,585.08/x
  3. Step 3: Cross multiply
    272,610.72x = 408,999.48 × 139,585.08
  4. Step 4: Simplify right side
    272,610.72x = 57,090,225,135.76
  5. Step 5: Solve for x
    x = 57,090,225,135.76/272,610.72
  6. Step 6: Final answer
    x = 209,420.32

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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.