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Finding the Fourth Proportional to 388,700.62, 536,223.59 and 227,456.76

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Solution

The fourth proportional to 388,700.62, 536,223.59 and 227,456.76 is: 313,783.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,700.62 : 536,223.59 = 227,456.76 : x
  2. Step 2: Convert to fraction form
    388,700.62/536,223.59 = 227,456.76/x
  3. Step 3: Cross multiply
    388,700.62x = 536,223.59 × 227,456.76
  4. Step 4: Simplify right side
    388,700.62x = 121,967,676,598.57
  5. Step 5: Solve for x
    x = 121,967,676,598.57/388,700.62
  6. Step 6: Final answer
    x = 313,783.08

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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.