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Finding the Fourth Proportional to 203,065,658.80, 304,772,670.60 and 81,984,007.60

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Solution

The fourth proportional to 203,065,658.80, 304,772,670.60 and 81,984,007.60 is: 123,046,334.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,065,658.80 : 304,772,670.60 = 81,984,007.60 : x
  2. Step 2: Convert to fraction form
    203,065,658.80/304,772,670.60 = 81,984,007.60/x
  3. Step 3: Cross multiply
    203,065,658.80x = 304,772,670.60 × 81,984,007.60
  4. Step 4: Simplify right side
    203,065,658.80x = 24,986,484,942,742,696
  5. Step 5: Solve for x
    x = 24,986,484,942,742,696/203,065,658.80
  6. Step 6: Final answer
    x = 123,046,334.33

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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.