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Finding the Fourth Proportional to 388,531.68, 536,253.48 and 245,195.52

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Solution

The fourth proportional to 388,531.68, 536,253.48 and 245,195.52 is: 338,420.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,531.68 : 536,253.48 = 245,195.52 : x
  2. Step 2: Convert to fraction form
    388,531.68/536,253.48 = 245,195.52/x
  3. Step 3: Cross multiply
    388,531.68x = 536,253.48 × 245,195.52
  4. Step 4: Simplify right side
    388,531.68x = 131,486,950,880.41
  5. Step 5: Solve for x
    x = 131,486,950,880.41/388,531.68
  6. Step 6: Final answer
    x = 338,420.15

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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.