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Finding the Fourth Proportional to 388,263.84, 535,721.43 and 227,087.43

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Solution

The fourth proportional to 388,263.84, 535,721.43 and 227,087.43 is: 313,332.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,263.84 : 535,721.43 = 227,087.43 : x
  2. Step 2: Convert to fraction form
    388,263.84/535,721.43 = 227,087.43/x
  3. Step 3: Cross multiply
    388,263.84x = 535,721.43 × 227,087.43
  4. Step 4: Simplify right side
    388,263.84x = 121,655,602,734.63
  5. Step 5: Solve for x
    x = 121,655,602,734.63/388,263.84
  6. Step 6: Final answer
    x = 313,332.30

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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.