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Finding the Fourth Proportional to 309,622.95, 426,884.15 and 200,534.58

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Solution

The fourth proportional to 309,622.95, 426,884.15 and 200,534.58 is: 276,481.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,622.95 : 426,884.15 = 200,534.58 : x
  2. Step 2: Convert to fraction form
    309,622.95/426,884.15 = 200,534.58/x
  3. Step 3: Cross multiply
    309,622.95x = 426,884.15 × 200,534.58
  4. Step 4: Simplify right side
    309,622.95x = 85,605,032,726.23
  5. Step 5: Solve for x
    x = 85,605,032,726.23/309,622.95
  6. Step 6: Final answer
    x = 276,481.55

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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.