Home / 278,339.11-384,067.14-155,825.13

Finding the Fourth Proportional to 278,339.11, 384,067.14 and 155,825.13

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Solution

The fourth proportional to 278,339.11, 384,067.14 and 155,825.13 is: 215,015.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,339.11 : 384,067.14 = 155,825.13 : x
  2. Step 2: Convert to fraction form
    278,339.11/384,067.14 = 155,825.13/x
  3. Step 3: Cross multiply
    278,339.11x = 384,067.14 × 155,825.13
  4. Step 4: Simplify right side
    278,339.11x = 59,847,312,019.23
  5. Step 5: Solve for x
    x = 59,847,312,019.23/278,339.11
  6. Step 6: Final answer
    x = 215,015.82

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1.5x scale

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.