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Finding the Fourth Proportional to 388,500.80, 536,281.76 and 303,645.44

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Solution

The fourth proportional to 388,500.80, 536,281.76 and 303,645.44 is: 419,148.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,500.80 : 536,281.76 = 303,645.44 : x
  2. Step 2: Convert to fraction form
    388,500.80/536,281.76 = 303,645.44/x
  3. Step 3: Cross multiply
    388,500.80x = 536,281.76 × 303,645.44
  4. Step 4: Simplify right side
    388,500.80x = 162,839,510,979.17
  5. Step 5: Solve for x
    x = 162,839,510,979.17/388,500.80
  6. Step 6: Final answer
    x = 419,148.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.