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Finding the Fourth Proportional to 286,749.97, 395,737.13 and 172,032.91

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Solution

The fourth proportional to 286,749.97, 395,737.13 and 172,032.91 is: 237,418.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,749.97 : 395,737.13 = 172,032.91 : x
  2. Step 2: Convert to fraction form
    286,749.97/395,737.13 = 172,032.91/x
  3. Step 3: Cross multiply
    286,749.97x = 395,737.13 × 172,032.91
  4. Step 4: Simplify right side
    286,749.97x = 68,079,810,068.95
  5. Step 5: Solve for x
    x = 68,079,810,068.95/286,749.97
  6. Step 6: Final answer
    x = 237,418.72

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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.