Home / 312,338.24-431,039.04-176,400.80

Finding the Fourth Proportional to 312,338.24, 431,039.04 and 176,400.80

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Solution

The fourth proportional to 312,338.24, 431,039.04 and 176,400.80 is: 243,440.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,338.24 : 431,039.04 = 176,400.80 : x
  2. Step 2: Convert to fraction form
    312,338.24/431,039.04 = 176,400.80/x
  3. Step 3: Cross multiply
    312,338.24x = 431,039.04 × 176,400.80
  4. Step 4: Simplify right side
    312,338.24x = 76,035,631,487.23
  5. Step 5: Solve for x
    x = 76,035,631,487.23/312,338.24
  6. Step 6: Final answer
    x = 243,440.03

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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.