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Finding the Fourth Proportional to 536,214.53, 740,041.72 and 309,860.03

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Solution

The fourth proportional to 536,214.53, 740,041.72 and 309,860.03 is: 427,644.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,214.53 : 740,041.72 = 309,860.03 : x
  2. Step 2: Convert to fraction form
    536,214.53/740,041.72 = 309,860.03/x
  3. Step 3: Cross multiply
    536,214.53x = 740,041.72 × 309,860.03
  4. Step 4: Simplify right side
    536,214.53x = 229,309,350,635.91
  5. Step 5: Solve for x
    x = 229,309,350,635.91/536,214.53
  6. Step 6: Final answer
    x = 427,644.79

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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.