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Finding the Fourth Proportional to 630,711.42, 946,191.75 and 231,355.90

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Solution

The fourth proportional to 630,711.42, 946,191.75 and 231,355.90 is: 347,079.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,711.42 : 946,191.75 = 231,355.90 : x
  2. Step 2: Convert to fraction form
    630,711.42/946,191.75 = 231,355.90/x
  3. Step 3: Cross multiply
    630,711.42x = 946,191.75 × 231,355.90
  4. Step 4: Simplify right side
    630,711.42x = 218,907,043,893.83
  5. Step 5: Solve for x
    x = 218,907,043,893.83/630,711.42
  6. Step 6: Final answer
    x = 347,079.56

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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.