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Finding the Fourth Proportional to 388,462.79, 583,239.36 and 199,059.26

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Solution

The fourth proportional to 388,462.79, 583,239.36 and 199,059.26 is: 298,868.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,462.79 : 583,239.36 = 199,059.26 : x
  2. Step 2: Convert to fraction form
    388,462.79/583,239.36 = 199,059.26/x
  3. Step 3: Cross multiply
    388,462.79x = 583,239.36 × 199,059.26
  4. Step 4: Simplify right side
    388,462.79x = 116,099,192,488.28
  5. Step 5: Solve for x
    x = 116,099,192,488.28/388,462.79
  6. Step 6: Final answer
    x = 298,868.25

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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.