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Finding the Fourth Proportional to 312,163.47, 430,785.95 and 168,923.51

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Solution

The fourth proportional to 312,163.47, 430,785.95 and 168,923.51 is: 233,114.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,163.47 : 430,785.95 = 168,923.51 : x
  2. Step 2: Convert to fraction form
    312,163.47/430,785.95 = 168,923.51/x
  3. Step 3: Cross multiply
    312,163.47x = 430,785.95 × 168,923.51
  4. Step 4: Simplify right side
    312,163.47x = 72,769,873,349.58
  5. Step 5: Solve for x
    x = 72,769,873,349.58/312,163.47
  6. Step 6: Final answer
    x = 233,114.63

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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.