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Finding the Fourth Proportional to 258,358.60, 387,537.90 and 164,585.80

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Solution

The fourth proportional to 258,358.60, 387,537.90 and 164,585.80 is: 246,878.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,358.60 : 387,537.90 = 164,585.80 : x
  2. Step 2: Convert to fraction form
    258,358.60/387,537.90 = 164,585.80/x
  3. Step 3: Cross multiply
    258,358.60x = 387,537.90 × 164,585.80
  4. Step 4: Simplify right side
    258,358.60x = 63,783,235,301.82
  5. Step 5: Solve for x
    x = 63,783,235,301.82/258,358.60
  6. Step 6: Final answer
    x = 246,878.70

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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.