Home / 280,148.07-386,588.60-159,272.31

Finding the Fourth Proportional to 280,148.07, 386,588.60 and 159,272.31

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Solution

The fourth proportional to 280,148.07, 386,588.60 and 159,272.31 is: 219,786.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,148.07 : 386,588.60 = 159,272.31 : x
  2. Step 2: Convert to fraction form
    280,148.07/386,588.60 = 159,272.31/x
  3. Step 3: Cross multiply
    280,148.07x = 386,588.60 × 159,272.31
  4. Step 4: Simplify right side
    280,148.07x = 61,572,858,545.30
  5. Step 5: Solve for x
    x = 61,572,858,545.30/280,148.07
  6. Step 6: Final answer
    x = 219,786.84

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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.