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Finding the Fourth Proportional to 388,991.16, 583,253.44 and 178,365.24

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Solution

The fourth proportional to 388,991.16, 583,253.44 and 178,365.24 is: 267,440.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,991.16 : 583,253.44 = 178,365.24 : x
  2. Step 2: Convert to fraction form
    388,991.16/583,253.44 = 178,365.24/x
  3. Step 3: Cross multiply
    388,991.16x = 583,253.44 × 178,365.24
  4. Step 4: Simplify right side
    388,991.16x = 104,032,139,806.43
  5. Step 5: Solve for x
    x = 104,032,139,806.43/388,991.16
  6. Step 6: Final answer
    x = 267,440.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.