Home / 286,311.47-395,110.53-158,987.05

Finding the Fourth Proportional to 286,311.47, 395,110.53 and 158,987.05

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Solution

The fourth proportional to 286,311.47, 395,110.53 and 158,987.05 is: 219,402.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,311.47 : 395,110.53 = 158,987.05 : x
  2. Step 2: Convert to fraction form
    286,311.47/395,110.53 = 158,987.05/x
  3. Step 3: Cross multiply
    286,311.47x = 395,110.53 × 158,987.05
  4. Step 4: Simplify right side
    286,311.47x = 62,817,456,600.86
  5. Step 5: Solve for x
    x = 62,817,456,600.86/286,311.47
  6. Step 6: Final answer
    x = 219,402.52

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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.