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Finding the Fourth Proportional to 536,639.22, 740,400.42 and 321,700.86

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Solution

The fourth proportional to 536,639.22, 740,400.42 and 321,700.86 is: 443,850.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,639.22 : 740,400.42 = 321,700.86 : x
  2. Step 2: Convert to fraction form
    536,639.22/740,400.42 = 321,700.86/x
  3. Step 3: Cross multiply
    536,639.22x = 740,400.42 × 321,700.86
  4. Step 4: Simplify right side
    536,639.22x = 238,187,451,858.36
  5. Step 5: Solve for x
    x = 238,187,451,858.36/536,639.22
  6. Step 6: Final answer
    x = 443,850.25

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1.5x scale

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.