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Finding the Fourth Proportional to 286,610.40, 395,500.32 and 159,278.40

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Solution

The fourth proportional to 286,610.40, 395,500.32 and 159,278.40 is: 219,791.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,610.40 : 395,500.32 = 159,278.40 : x
  2. Step 2: Convert to fraction form
    286,610.40/395,500.32 = 159,278.40/x
  3. Step 3: Cross multiply
    286,610.40x = 395,500.32 × 159,278.40
  4. Step 4: Simplify right side
    286,610.40x = 62,994,658,169.09
  5. Step 5: Solve for x
    x = 62,994,658,169.09/286,610.40
  6. Step 6: Final answer
    x = 219,791.95

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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.