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Finding the Fourth Proportional to 501,247.98, 691,658.28 and 286,401.96

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Solution

The fourth proportional to 501,247.98, 691,658.28 and 286,401.96 is: 395,198.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,247.98 : 691,658.28 = 286,401.96 : x
  2. Step 2: Convert to fraction form
    501,247.98/691,658.28 = 286,401.96/x
  3. Step 3: Cross multiply
    501,247.98x = 691,658.28 × 286,401.96
  4. Step 4: Simplify right side
    501,247.98x = 198,092,287,042.23
  5. Step 5: Solve for x
    x = 198,092,287,042.23/501,247.98
  6. Step 6: Final answer
    x = 395,198.18

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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.