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Finding the Fourth Proportional to 312,290.99, 468,434.91 and 75,633.66

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Solution

The fourth proportional to 312,290.99, 468,434.91 and 75,633.66 is: 113,450.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,290.99 : 468,434.91 = 75,633.66 : x
  2. Step 2: Convert to fraction form
    312,290.99/468,434.91 = 75,633.66/x
  3. Step 3: Cross multiply
    312,290.99x = 468,434.91 × 75,633.66
  4. Step 4: Simplify right side
    312,290.99x = 35,429,446,715.07
  5. Step 5: Solve for x
    x = 35,429,446,715.07/312,290.99
  6. Step 6: Final answer
    x = 113,450.11

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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.