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Finding the Fourth Proportional to 388,732.40, 583,098.60 and 222,403.76

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Solution

The fourth proportional to 388,732.40, 583,098.60 and 222,403.76 is: 333,605.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,732.40 : 583,098.60 = 222,403.76 : x
  2. Step 2: Convert to fraction form
    388,732.40/583,098.60 = 222,403.76/x
  3. Step 3: Cross multiply
    388,732.40x = 583,098.60 × 222,403.76
  4. Step 4: Simplify right side
    388,732.40x = 129,683,321,090.74
  5. Step 5: Solve for x
    x = 129,683,321,090.74/388,732.40
  6. Step 6: Final answer
    x = 333,605.64

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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.