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Finding the Fourth Proportional to 356,919.72, 534,327.71 and 312,632.97

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Solution

The fourth proportional to 356,919.72, 534,327.71 and 312,632.97 is: 468,028.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,919.72 : 534,327.71 = 312,632.97 : x
  2. Step 2: Convert to fraction form
    356,919.72/534,327.71 = 312,632.97/x
  3. Step 3: Cross multiply
    356,919.72x = 534,327.71 × 312,632.97
  4. Step 4: Simplify right side
    356,919.72x = 167,048,457,367.43
  5. Step 5: Solve for x
    x = 167,048,457,367.43/356,919.72
  6. Step 6: Final answer
    x = 468,028.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.