Home / 286,419.68-395,259-159,107.12

Finding the Fourth Proportional to 286,419.68, 395,259 and 159,107.12

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Solution

The fourth proportional to 286,419.68, 395,259 and 159,107.12 is: 219,567.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,419.68 : 395,259 = 159,107.12 : x
  2. Step 2: Convert to fraction form
    286,419.68/395,259 = 159,107.12/x
  3. Step 3: Cross multiply
    286,419.68x = 395,259 × 159,107.12
  4. Step 4: Simplify right side
    286,419.68x = 62,888,521,144.08
  5. Step 5: Solve for x
    x = 62,888,521,144.08/286,419.68
  6. Step 6: Final answer
    x = 219,567.74

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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.