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Finding the Fourth Proportional to 380,519.43, 570,283.43 and 212,032.95

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Solution

The fourth proportional to 380,519.43, 570,283.43 and 212,032.95 is: 317,773.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,519.43 : 570,283.43 = 212,032.95 : x
  2. Step 2: Convert to fraction form
    380,519.43/570,283.43 = 212,032.95/x
  3. Step 3: Cross multiply
    380,519.43x = 570,283.43 × 212,032.95
  4. Step 4: Simplify right side
    380,519.43x = 120,918,878,008.14
  5. Step 5: Solve for x
    x = 120,918,878,008.14/380,519.43
  6. Step 6: Final answer
    x = 317,773.20

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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.