Home / 278,340.40-384,109.78-151,016.02

Finding the Fourth Proportional to 278,340.40, 384,109.78 and 151,016.02

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Solution

The fourth proportional to 278,340.40, 384,109.78 and 151,016.02 is: 208,402.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,340.40 : 384,109.78 = 151,016.02 : x
  2. Step 2: Convert to fraction form
    278,340.40/384,109.78 = 151,016.02/x
  3. Step 3: Cross multiply
    278,340.40x = 384,109.78 × 151,016.02
  4. Step 4: Simplify right side
    278,340.40x = 58,006,730,218.68
  5. Step 5: Solve for x
    x = 58,006,730,218.68/278,340.40
  6. Step 6: Final answer
    x = 208,402.12

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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.