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Finding the Fourth Proportional to 610,218.21, 915,150.85 and 205,365.80

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Solution

The fourth proportional to 610,218.21, 915,150.85 and 205,365.80 is: 307,989.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,218.21 : 915,150.85 = 205,365.80 : x
  2. Step 2: Convert to fraction form
    610,218.21/915,150.85 = 205,365.80/x
  3. Step 3: Cross multiply
    610,218.21x = 915,150.85 × 205,365.80
  4. Step 4: Simplify right side
    610,218.21x = 187,940,685,404.10
  5. Step 5: Solve for x
    x = 187,940,685,404.10/610,218.21
  6. Step 6: Final answer
    x = 307,989.31

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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.