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Finding the Fourth Proportional to 426,830.55, 638,863.43 and 302,414.55

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Solution

The fourth proportional to 426,830.55, 638,863.43 and 302,414.55 is: 452,642.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,830.55 : 638,863.43 = 302,414.55 : x
  2. Step 2: Convert to fraction form
    426,830.55/638,863.43 = 302,414.55/x
  3. Step 3: Cross multiply
    426,830.55x = 638,863.43 × 302,414.55
  4. Step 4: Simplify right side
    426,830.55x = 193,201,595,182.83
  5. Step 5: Solve for x
    x = 193,201,595,182.83/426,830.55
  6. Step 6: Final answer
    x = 452,642.38

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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.