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Finding the Fourth Proportional to 630,649.95, 945,412.29 and 231,197.40

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Solution

The fourth proportional to 630,649.95, 945,412.29 and 231,197.40 is: 346,589.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,649.95 : 945,412.29 = 231,197.40 : x
  2. Step 2: Convert to fraction form
    630,649.95/945,412.29 = 231,197.40/x
  3. Step 3: Cross multiply
    630,649.95x = 945,412.29 × 231,197.40
  4. Step 4: Simplify right side
    630,649.95x = 218,576,863,376.05
  5. Step 5: Solve for x
    x = 218,576,863,376.05/630,649.95
  6. Step 6: Final answer
    x = 346,589.84

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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.