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Finding the Fourth Proportional to 522,169.61, 720,539.88 and 307,296.86

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Solution

The fourth proportional to 522,169.61, 720,539.88 and 307,296.86 is: 424,037.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,169.61 : 720,539.88 = 307,296.86 : x
  2. Step 2: Convert to fraction form
    522,169.61/720,539.88 = 307,296.86/x
  3. Step 3: Cross multiply
    522,169.61x = 720,539.88 × 307,296.86
  4. Step 4: Simplify right side
    522,169.61x = 221,419,642,628.78
  5. Step 5: Solve for x
    x = 221,419,642,628.78/522,169.61
  6. Step 6: Final answer
    x = 424,037.78

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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.