Home / 312,378.24-431,082.54-169,139.64

Finding the Fourth Proportional to 312,378.24, 431,082.54 and 169,139.64

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Solution

The fourth proportional to 312,378.24, 431,082.54 and 169,139.64 is: 233,413.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,378.24 : 431,082.54 = 169,139.64 : x
  2. Step 2: Convert to fraction form
    312,378.24/431,082.54 = 169,139.64/x
  3. Step 3: Cross multiply
    312,378.24x = 431,082.54 × 169,139.64
  4. Step 4: Simplify right side
    312,378.24x = 72,913,145,625.89
  5. Step 5: Solve for x
    x = 72,913,145,625.89/312,378.24
  6. Step 6: Final answer
    x = 233,413.01

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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.