Home / 261,669.70-392,703.27-191,731.78

Finding the Fourth Proportional to 261,669.70, 392,703.27 and 191,731.78

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Solution

The fourth proportional to 261,669.70, 392,703.27 and 191,731.78 is: 287,743.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,669.70 : 392,703.27 = 191,731.78 : x
  2. Step 2: Convert to fraction form
    261,669.70/392,703.27 = 191,731.78/x
  3. Step 3: Cross multiply
    261,669.70x = 392,703.27 × 191,731.78
  4. Step 4: Simplify right side
    261,669.70x = 75,293,696,968.92
  5. Step 5: Solve for x
    x = 75,293,696,968.92/261,669.70
  6. Step 6: Final answer
    x = 287,743.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.