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Finding the Fourth Proportional to 286,377.90, 395,190.60 and 159,061.68

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Solution

The fourth proportional to 286,377.90, 395,190.60 and 159,061.68 is: 219,499.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,377.90 : 395,190.60 = 159,061.68 : x
  2. Step 2: Convert to fraction form
    286,377.90/395,190.60 = 159,061.68/x
  3. Step 3: Cross multiply
    286,377.90x = 395,190.60 × 159,061.68
  4. Step 4: Simplify right side
    286,377.90x = 62,859,680,756.21
  5. Step 5: Solve for x
    x = 62,859,680,756.21/286,377.90
  6. Step 6: Final answer
    x = 219,499.06

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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.