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Finding the Fourth Proportional to 286,387.70, 395,223.21 and 159,071.49

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Solution

The fourth proportional to 286,387.70, 395,223.21 and 159,071.49 is: 219,523.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,387.70 : 395,223.21 = 159,071.49 : x
  2. Step 2: Convert to fraction form
    286,387.70/395,223.21 = 159,071.49/x
  3. Step 3: Cross multiply
    286,387.70x = 395,223.21 × 159,071.49
  4. Step 4: Simplify right side
    286,387.70x = 62,868,744,897.28
  5. Step 5: Solve for x
    x = 62,868,744,897.28/286,387.70
  6. Step 6: Final answer
    x = 219,523.21

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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.