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Finding the Fourth Proportional to 635,280.40, 952,718.28 and 208,717.20

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Solution

The fourth proportional to 635,280.40, 952,718.28 and 208,717.20 is: 313,009.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,280.40 : 952,718.28 = 208,717.20 : x
  2. Step 2: Convert to fraction form
    635,280.40/952,718.28 = 208,717.20/x
  3. Step 3: Cross multiply
    635,280.40x = 952,718.28 × 208,717.20
  4. Step 4: Simplify right side
    635,280.40x = 198,848,691,790.42
  5. Step 5: Solve for x
    x = 198,848,691,790.42/635,280.40
  6. Step 6: Final answer
    x = 313,009.33

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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.