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Finding the Fourth Proportional to 388,263.35, 535,720.74 and 227,086.91

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Solution

The fourth proportional to 388,263.35, 535,720.74 and 227,086.91 is: 313,331.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,263.35 : 535,720.74 = 227,086.91 : x
  2. Step 2: Convert to fraction form
    388,263.35/535,720.74 = 227,086.91/x
  3. Step 3: Cross multiply
    388,263.35x = 535,720.74 × 227,086.91
  4. Step 4: Simplify right side
    388,263.35x = 121,655,167,469.51
  5. Step 5: Solve for x
    x = 121,655,167,469.51/388,263.35
  6. Step 6: Final answer
    x = 313,331.58

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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.