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Finding the Fourth Proportional to 474,136.82, 654,847.72 and 318,817.91

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Solution

The fourth proportional to 474,136.82, 654,847.72 and 318,817.91 is: 440,331.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,136.82 : 654,847.72 = 318,817.91 : x
  2. Step 2: Convert to fraction form
    474,136.82/654,847.72 = 318,817.91/x
  3. Step 3: Cross multiply
    474,136.82x = 654,847.72 × 318,817.91
  4. Step 4: Simplify right side
    474,136.82x = 208,777,178,184.43
  5. Step 5: Solve for x
    x = 208,777,178,184.43/474,136.82
  6. Step 6: Final answer
    x = 440,331.08

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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.