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Finding the Fourth Proportional to 209,927.34, 315,012.94 and 88,338.91

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Solution

The fourth proportional to 209,927.34, 315,012.94 and 88,338.91 is: 132,559.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,927.34 : 315,012.94 = 88,338.91 : x
  2. Step 2: Convert to fraction form
    209,927.34/315,012.94 = 88,338.91/x
  3. Step 3: Cross multiply
    209,927.34x = 315,012.94 × 88,338.91
  4. Step 4: Simplify right side
    209,927.34x = 27,827,898,180.43
  5. Step 5: Solve for x
    x = 27,827,898,180.43/209,927.34
  6. Step 6: Final answer
    x = 132,559.67

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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.