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Finding the Fourth Proportional to 388,225.36, 536,042.82 and 382,025.20

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Solution

The fourth proportional to 388,225.36, 536,042.82 and 382,025.20 is: 527,481.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,225.36 : 536,042.82 = 382,025.20 : x
  2. Step 2: Convert to fraction form
    388,225.36/536,042.82 = 382,025.20/x
  3. Step 3: Cross multiply
    388,225.36x = 536,042.82 × 382,025.20
  4. Step 4: Simplify right side
    388,225.36x = 204,781,865,519.06
  5. Step 5: Solve for x
    x = 204,781,865,519.06/388,225.36
  6. Step 6: Final answer
    x = 527,481.94

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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.