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Finding the Fourth Proportional to 520,350.62, 780,466.30 and 136,136.56

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Solution

The fourth proportional to 520,350.62, 780,466.30 and 136,136.56 is: 204,189.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,350.62 : 780,466.30 = 136,136.56 : x
  2. Step 2: Convert to fraction form
    520,350.62/780,466.30 = 136,136.56/x
  3. Step 3: Cross multiply
    520,350.62x = 780,466.30 × 136,136.56
  4. Step 4: Simplify right side
    520,350.62x = 106,249,996,597.25
  5. Step 5: Solve for x
    x = 106,249,996,597.25/520,350.62
  6. Step 6: Final answer
    x = 204,189.24

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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.