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Finding the Fourth Proportional to 407,040.86, 610,407.92 and 170,399.90

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Solution

The fourth proportional to 407,040.86, 610,407.92 and 170,399.90 is: 255,535.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,040.86 : 610,407.92 = 170,399.90 : x
  2. Step 2: Convert to fraction form
    407,040.86/610,407.92 = 170,399.90/x
  3. Step 3: Cross multiply
    407,040.86x = 610,407.92 × 170,399.90
  4. Step 4: Simplify right side
    407,040.86x = 104,013,448,527.21
  5. Step 5: Solve for x
    x = 104,013,448,527.21/407,040.86
  6. Step 6: Final answer
    x = 255,535.64

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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.