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Finding the Fourth Proportional to 391,599.48, 587,594.34 and 155,112.60

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Solution

The fourth proportional to 391,599.48, 587,594.34 and 155,112.60 is: 232,746.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,599.48 : 587,594.34 = 155,112.60 : x
  2. Step 2: Convert to fraction form
    391,599.48/587,594.34 = 155,112.60/x
  3. Step 3: Cross multiply
    391,599.48x = 587,594.34 × 155,112.60
  4. Step 4: Simplify right side
    391,599.48x = 91,143,285,822.68
  5. Step 5: Solve for x
    x = 91,143,285,822.68/391,599.48
  6. Step 6: Final answer
    x = 232,746.19

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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.