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Finding the Fourth Proportional to 315,230.76, 435,019.83 and 171,993.78

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Solution

The fourth proportional to 315,230.76, 435,019.83 and 171,993.78 is: 237,352.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,230.76 : 435,019.83 = 171,993.78 : x
  2. Step 2: Convert to fraction form
    315,230.76/435,019.83 = 171,993.78/x
  3. Step 3: Cross multiply
    315,230.76x = 435,019.83 × 171,993.78
  4. Step 4: Simplify right side
    315,230.76x = 74,820,704,936.66
  5. Step 5: Solve for x
    x = 74,820,704,936.66/315,230.76
  6. Step 6: Final answer
    x = 237,352.17

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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.