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Finding the Fourth Proportional to 388,785.02, 536,591.99 and 308,822.83

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Solution

The fourth proportional to 388,785.02, 536,591.99 and 308,822.83 is: 426,230.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,785.02 : 536,591.99 = 308,822.83 : x
  2. Step 2: Convert to fraction form
    388,785.02/536,591.99 = 308,822.83/x
  3. Step 3: Cross multiply
    388,785.02x = 536,591.99 × 308,822.83
  4. Step 4: Simplify right side
    388,785.02x = 165,711,856,337.71
  5. Step 5: Solve for x
    x = 165,711,856,337.71/388,785.02
  6. Step 6: Final answer
    x = 426,230.05

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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.