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Finding the Fourth Proportional to 400,399.86, 552,497.16 and 239,220.66

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Solution

The fourth proportional to 400,399.86, 552,497.16 and 239,220.66 is: 330,091.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,399.86 : 552,497.16 = 239,220.66 : x
  2. Step 2: Convert to fraction form
    400,399.86/552,497.16 = 239,220.66/x
  3. Step 3: Cross multiply
    400,399.86x = 552,497.16 × 239,220.66
  4. Step 4: Simplify right side
    400,399.86x = 132,168,735,263.33
  5. Step 5: Solve for x
    x = 132,168,735,263.33/400,399.86
  6. Step 6: Final answer
    x = 330,091.86

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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.