Home / 305,325.50-421,399.62-169,403.18

Finding the Fourth Proportional to 305,325.50, 421,399.62 and 169,403.18

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Solution

The fourth proportional to 305,325.50, 421,399.62 and 169,403.18 is: 233,804.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,325.50 : 421,399.62 = 169,403.18 : x
  2. Step 2: Convert to fraction form
    305,325.50/421,399.62 = 169,403.18/x
  3. Step 3: Cross multiply
    305,325.50x = 421,399.62 × 169,403.18
  4. Step 4: Simplify right side
    305,325.50x = 71,386,433,571.79
  5. Step 5: Solve for x
    x = 71,386,433,571.79/305,325.50
  6. Step 6: Final answer
    x = 233,804.37

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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.