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Finding the Fourth Proportional to 635,281.40, 952,719.78 and 208,718.20

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Solution

The fourth proportional to 635,281.40, 952,719.78 and 208,718.20 is: 313,010.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,281.40 : 952,719.78 = 208,718.20 : x
  2. Step 2: Convert to fraction form
    635,281.40/952,719.78 = 208,718.20/x
  3. Step 3: Cross multiply
    635,281.40x = 952,719.78 × 208,718.20
  4. Step 4: Simplify right side
    635,281.40x = 198,849,957,586.00
  5. Step 5: Solve for x
    x = 198,849,957,586.00/635,281.40
  6. Step 6: Final answer
    x = 313,010.83

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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.