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Finding the Fourth Proportional to 630,648.18, 945,409.66 and 231,195.68

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Solution

The fourth proportional to 630,648.18, 945,409.66 and 231,195.68 is: 346,587.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,648.18 : 945,409.66 = 231,195.68 : x
  2. Step 2: Convert to fraction form
    630,648.18/945,409.66 = 231,195.68/x
  3. Step 3: Cross multiply
    630,648.18x = 945,409.66 × 231,195.68
  4. Step 4: Simplify right side
    630,648.18x = 218,574,629,222.27
  5. Step 5: Solve for x
    x = 218,574,629,222.27/630,648.18
  6. Step 6: Final answer
    x = 346,587.27

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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.