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Finding the Fourth Proportional to 347,131.95, 520,595.87 and 147,450.75

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Solution

The fourth proportional to 347,131.95, 520,595.87 and 147,450.75 is: 221,132.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,131.95 : 520,595.87 = 147,450.75 : x
  2. Step 2: Convert to fraction form
    347,131.95/520,595.87 = 147,450.75/x
  3. Step 3: Cross multiply
    347,131.95x = 520,595.87 × 147,450.75
  4. Step 4: Simplify right side
    347,131.95x = 76,762,250,741.15
  5. Step 5: Solve for x
    x = 76,762,250,741.15/347,131.95
  6. Step 6: Final answer
    x = 221,132.77

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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.