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Finding the Fourth Proportional to 380,418.34, 570,665.56 and 140,595.26

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Solution

The fourth proportional to 380,418.34, 570,665.56 and 140,595.26 is: 210,906.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,418.34 : 570,665.56 = 140,595.26 : x
  2. Step 2: Convert to fraction form
    380,418.34/570,665.56 = 140,595.26/x
  3. Step 3: Cross multiply
    380,418.34x = 570,665.56 × 140,595.26
  4. Step 4: Simplify right side
    380,418.34x = 80,232,872,781.25
  5. Step 5: Solve for x
    x = 80,232,872,781.25/380,418.34
  6. Step 6: Final answer
    x = 210,906.95

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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.