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Finding the Fourth Proportional to 636,998.40, 955,645.20 and 216,274.26

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Solution

The fourth proportional to 636,998.40, 955,645.20 and 216,274.26 is: 324,461.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,998.40 : 955,645.20 = 216,274.26 : x
  2. Step 2: Convert to fraction form
    636,998.40/955,645.20 = 216,274.26/x
  3. Step 3: Cross multiply
    636,998.40x = 955,645.20 × 216,274.26
  4. Step 4: Simplify right side
    636,998.40x = 206,681,458,452.55
  5. Step 5: Solve for x
    x = 206,681,458,452.55/636,998.40
  6. Step 6: Final answer
    x = 324,461.50

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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.