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Finding the Fourth Proportional to 388,552.77, 535,997.59 and 267,483.87

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Solution

The fourth proportional to 388,552.77, 535,997.59 and 267,483.87 is: 368,986.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,552.77 : 535,997.59 = 267,483.87 : x
  2. Step 2: Convert to fraction form
    388,552.77/535,997.59 = 267,483.87/x
  3. Step 3: Cross multiply
    388,552.77x = 535,997.59 × 267,483.87
  4. Step 4: Simplify right side
    388,552.77x = 143,370,709,015.16
  5. Step 5: Solve for x
    x = 143,370,709,015.16/388,552.77
  6. Step 6: Final answer
    x = 368,986.45

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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.