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Finding the Fourth Proportional to 387,627.60, 581,441.40 and 121,469.70

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Solution

The fourth proportional to 387,627.60, 581,441.40 and 121,469.70 is: 182,204.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,627.60 : 581,441.40 = 121,469.70 : x
  2. Step 2: Convert to fraction form
    387,627.60/581,441.40 = 121,469.70/x
  3. Step 3: Cross multiply
    387,627.60x = 581,441.40 × 121,469.70
  4. Step 4: Simplify right side
    387,627.60x = 70,627,512,425.58
  5. Step 5: Solve for x
    x = 70,627,512,425.58/387,627.60
  6. Step 6: Final answer
    x = 182,204.55

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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.