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Finding the Fourth Proportional to 258,545.40, 387,818.10 and 174,564.60

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Solution

The fourth proportional to 258,545.40, 387,818.10 and 174,564.60 is: 261,846.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,545.40 : 387,818.10 = 174,564.60 : x
  2. Step 2: Convert to fraction form
    258,545.40/387,818.10 = 174,564.60/x
  3. Step 3: Cross multiply
    258,545.40x = 387,818.10 × 174,564.60
  4. Step 4: Simplify right side
    258,545.40x = 67,699,311,499.26
  5. Step 5: Solve for x
    x = 67,699,311,499.26/258,545.40
  6. Step 6: Final answer
    x = 261,846.90

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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.