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Finding the Fourth Proportional to 217,405.85, 300,023.18 and 131,352.89

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Solution

The fourth proportional to 217,405.85, 300,023.18 and 131,352.89 is: 181,268.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,405.85 : 300,023.18 = 131,352.89 : x
  2. Step 2: Convert to fraction form
    217,405.85/300,023.18 = 131,352.89/x
  3. Step 3: Cross multiply
    217,405.85x = 300,023.18 × 131,352.89
  4. Step 4: Simplify right side
    217,405.85x = 39,408,909,603.11
  5. Step 5: Solve for x
    x = 39,408,909,603.11/217,405.85
  6. Step 6: Final answer
    x = 181,268.86

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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.