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Finding the Fourth Proportional to 388,999.40, 536,613.48 and 267,932.48

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Solution

The fourth proportional to 388,999.40, 536,613.48 and 267,932.48 is: 369,605.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,999.40 : 536,613.48 = 267,932.48 : x
  2. Step 2: Convert to fraction form
    388,999.40/536,613.48 = 267,932.48/x
  3. Step 3: Cross multiply
    388,999.40x = 536,613.48 × 267,932.48
  4. Step 4: Simplify right side
    388,999.40x = 143,776,180,497.83
  5. Step 5: Solve for x
    x = 143,776,180,497.83/388,999.40
  6. Step 6: Final answer
    x = 369,605.15

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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.