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Finding the Fourth Proportional to 388,859.60, 583,289.40 and 229,427.30

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Solution

The fourth proportional to 388,859.60, 583,289.40 and 229,427.30 is: 344,140.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,859.60 : 583,289.40 = 229,427.30 : x
  2. Step 2: Convert to fraction form
    388,859.60/583,289.40 = 229,427.30/x
  3. Step 3: Cross multiply
    388,859.60x = 583,289.40 × 229,427.30
  4. Step 4: Simplify right side
    388,859.60x = 133,822,512,160.62
  5. Step 5: Solve for x
    x = 133,822,512,160.62/388,859.60
  6. Step 6: Final answer
    x = 344,140.95

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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.