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Finding the Fourth Proportional to 388,711.39, 583,113.80 and 367,453.75

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Solution

The fourth proportional to 388,711.39, 583,113.80 and 367,453.75 is: 551,224.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,711.39 : 583,113.80 = 367,453.75 : x
  2. Step 2: Convert to fraction form
    388,711.39/583,113.80 = 367,453.75/x
  3. Step 3: Cross multiply
    388,711.39x = 583,113.80 × 367,453.75
  4. Step 4: Simplify right side
    388,711.39x = 214,267,351,947.60
  5. Step 5: Solve for x
    x = 214,267,351,947.60/388,711.39
  6. Step 6: Final answer
    x = 551,224.79

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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.