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Finding the Fourth Proportional to 312,682.86, 469,019.36 and 99,447.71

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Solution

The fourth proportional to 312,682.86, 469,019.36 and 99,447.71 is: 149,169.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,682.86 : 469,019.36 = 99,447.71 : x
  2. Step 2: Convert to fraction form
    312,682.86/469,019.36 = 99,447.71/x
  3. Step 3: Cross multiply
    312,682.86x = 469,019.36 × 99,447.71
  4. Step 4: Simplify right side
    312,682.86x = 46,642,898,455.33
  5. Step 5: Solve for x
    x = 46,642,898,455.33/312,682.86
  6. Step 6: Final answer
    x = 149,169.99

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1.5x scale

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.