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Finding the Fourth Proportional to 258,722.34, 357,086.10 and 145,545.09

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Solution

The fourth proportional to 258,722.34, 357,086.10 and 145,545.09 is: 200,879.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,722.34 : 357,086.10 = 145,545.09 : x
  2. Step 2: Convert to fraction form
    258,722.34/357,086.10 = 145,545.09/x
  3. Step 3: Cross multiply
    258,722.34x = 357,086.10 × 145,545.09
  4. Step 4: Simplify right side
    258,722.34x = 51,972,128,562.25
  5. Step 5: Solve for x
    x = 51,972,128,562.25/258,722.34
  6. Step 6: Final answer
    x = 200,879.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.