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Finding the Fourth Proportional to 635,278.40, 952,715.28 and 208,715.20

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Solution

The fourth proportional to 635,278.40, 952,715.28 and 208,715.20 is: 313,006.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,278.40 : 952,715.28 = 208,715.20 : x
  2. Step 2: Convert to fraction form
    635,278.40/952,715.28 = 208,715.20/x
  3. Step 3: Cross multiply
    635,278.40x = 952,715.28 × 208,715.20
  4. Step 4: Simplify right side
    635,278.40x = 198,846,160,208.26
  5. Step 5: Solve for x
    x = 198,846,160,208.26/635,278.40
  6. Step 6: Final answer
    x = 313,006.33

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1.5x scale

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.