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Finding the Fourth Proportional to 286,360.85, 395,178.90 and 159,036.45

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Solution

The fourth proportional to 286,360.85, 395,178.90 and 159,036.45 is: 219,470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,360.85 : 395,178.90 = 159,036.45 : x
  2. Step 2: Convert to fraction form
    286,360.85/395,178.90 = 159,036.45/x
  3. Step 3: Cross multiply
    286,360.85x = 395,178.90 × 159,036.45
  4. Step 4: Simplify right side
    286,360.85x = 62,847,846,997.42
  5. Step 5: Solve for x
    x = 62,847,846,997.42/286,360.85
  6. Step 6: Final answer
    x = 219,470.81

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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.