Home / 278,316-416,921.04-137,645.28

Finding the Fourth Proportional to 278,316, 416,921.04 and 137,645.28

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Solution

The fourth proportional to 278,316, 416,921.04 and 137,645.28 is: 206,194.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,316 : 416,921.04 = 137,645.28 : x
  2. Step 2: Convert to fraction form
    278,316/416,921.04 = 137,645.28/x
  3. Step 3: Cross multiply
    278,316x = 416,921.04 × 137,645.28
  4. Step 4: Simplify right side
    278,316x = 57,387,213,288.69
  5. Step 5: Solve for x
    x = 57,387,213,288.69/278,316
  6. Step 6: Final answer
    x = 206,194.45

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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.