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Finding the Fourth Proportional to 388,304.84, 535,655.16 and 267,235.94

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Solution

The fourth proportional to 388,304.84, 535,655.16 and 267,235.94 is: 368,644.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,304.84 : 535,655.16 = 267,235.94 : x
  2. Step 2: Convert to fraction form
    388,304.84/535,655.16 = 267,235.94/x
  3. Step 3: Cross multiply
    388,304.84x = 535,655.16 × 267,235.94
  4. Step 4: Simplify right side
    388,304.84x = 143,146,308,994.70
  5. Step 5: Solve for x
    x = 143,146,308,994.70/388,304.84
  6. Step 6: Final answer
    x = 368,644.15

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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.