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Finding the Fourth Proportional to 258,350.40, 386,834.40 and 164,347.20

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Solution

The fourth proportional to 258,350.40, 386,834.40 and 164,347.20 is: 246,081.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,350.40 : 386,834.40 = 164,347.20 : x
  2. Step 2: Convert to fraction form
    258,350.40/386,834.40 = 164,347.20/x
  3. Step 3: Cross multiply
    258,350.40x = 386,834.40 × 164,347.20
  4. Step 4: Simplify right side
    258,350.40x = 63,575,150,503.68
  5. Step 5: Solve for x
    x = 63,575,150,503.68/258,350.40
  6. Step 6: Final answer
    x = 246,081.10

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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.