Home / 272,090.28-408,139.54-103,619.93

Finding the Fourth Proportional to 272,090.28, 408,139.54 and 103,619.93

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Solution

The fourth proportional to 272,090.28, 408,139.54 and 103,619.93 is: 155,431.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,090.28 : 408,139.54 = 103,619.93 : x
  2. Step 2: Convert to fraction form
    272,090.28/408,139.54 = 103,619.93/x
  3. Step 3: Cross multiply
    272,090.28x = 408,139.54 × 103,619.93
  4. Step 4: Simplify right side
    272,090.28x = 42,291,391,326.33
  5. Step 5: Solve for x
    x = 42,291,391,326.33/272,090.28
  6. Step 6: Final answer
    x = 155,431.47

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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.