Home / 278,390.36-384,078.28-157,530.36

Finding the Fourth Proportional to 278,390.36, 384,078.28 and 157,530.36

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Solution

The fourth proportional to 278,390.36, 384,078.28 and 157,530.36 is: 217,335.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,390.36 : 384,078.28 = 157,530.36 : x
  2. Step 2: Convert to fraction form
    278,390.36/384,078.28 = 157,530.36/x
  3. Step 3: Cross multiply
    278,390.36x = 384,078.28 × 157,530.36
  4. Step 4: Simplify right side
    278,390.36x = 60,503,989,716.58
  5. Step 5: Solve for x
    x = 60,503,989,716.58/278,390.36
  6. Step 6: Final answer
    x = 217,335.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.