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Finding the Fourth Proportional to 388,833.80, 583,195.33 and 122,559.71

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Solution

The fourth proportional to 388,833.80, 583,195.33 and 122,559.71 is: 183,822.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,833.80 : 583,195.33 = 122,559.71 : x
  2. Step 2: Convert to fraction form
    388,833.80/583,195.33 = 122,559.71/x
  3. Step 3: Cross multiply
    388,833.80x = 583,195.33 × 122,559.71
  4. Step 4: Simplify right side
    388,833.80x = 71,476,249,905.36
  5. Step 5: Solve for x
    x = 71,476,249,905.36/388,833.80
  6. Step 6: Final answer
    x = 183,822.11

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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.