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Finding the Fourth Proportional to 372,010.70, 513,351.80 and 208,658.20

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Solution

The fourth proportional to 372,010.70, 513,351.80 and 208,658.20 is: 287,935.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,010.70 : 513,351.80 = 208,658.20 : x
  2. Step 2: Convert to fraction form
    372,010.70/513,351.80 = 208,658.20/x
  3. Step 3: Cross multiply
    372,010.70x = 513,351.80 × 208,658.20
  4. Step 4: Simplify right side
    372,010.70x = 107,115,062,554.76
  5. Step 5: Solve for x
    x = 107,115,062,554.76/372,010.70
  6. Step 6: Final answer
    x = 287,935.43

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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.