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Finding the Fourth Proportional to 388,533.50, 536,214.65 and 227,378.94

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Solution

The fourth proportional to 388,533.50, 536,214.65 and 227,378.94 is: 313,805.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,533.50 : 536,214.65 = 227,378.94 : x
  2. Step 2: Convert to fraction form
    388,533.50/536,214.65 = 227,378.94/x
  3. Step 3: Cross multiply
    388,533.50x = 536,214.65 × 227,378.94
  4. Step 4: Simplify right side
    388,533.50x = 121,923,918,729.47
  5. Step 5: Solve for x
    x = 121,923,918,729.47/388,533.50
  6. Step 6: Final answer
    x = 313,805.42

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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.