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Finding the Fourth Proportional to 258,115.40, 387,419.37 and 158,470.22

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Solution

The fourth proportional to 258,115.40, 387,419.37 and 158,470.22 is: 237,856.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,115.40 : 387,419.37 = 158,470.22 : x
  2. Step 2: Convert to fraction form
    258,115.40/387,419.37 = 158,470.22/x
  3. Step 3: Cross multiply
    258,115.40x = 387,419.37 × 158,470.22
  4. Step 4: Simplify right side
    258,115.40x = 61,394,430,859.06
  5. Step 5: Solve for x
    x = 61,394,430,859.06/258,115.40
  6. Step 6: Final answer
    x = 237,856.52

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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.