Home / 286,790.91-395,769-159,465.39

Finding the Fourth Proportional to 286,790.91, 395,769 and 159,465.39

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Solution

The fourth proportional to 286,790.91, 395,769 and 159,465.39 is: 220,060.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,790.91 : 395,769 = 159,465.39 : x
  2. Step 2: Convert to fraction form
    286,790.91/395,769 = 159,465.39/x
  3. Step 3: Cross multiply
    286,790.91x = 395,769 × 159,465.39
  4. Step 4: Simplify right side
    286,790.91x = 63,111,457,934.91
  5. Step 5: Solve for x
    x = 63,111,457,934.91/286,790.91
  6. Step 6: Final answer
    x = 220,060.87

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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.