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Finding the Fourth Proportional to 388,800.48, 581,883.52 and 239,135.72

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Solution

The fourth proportional to 388,800.48, 581,883.52 and 239,135.72 is: 357,893.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,800.48 : 581,883.52 = 239,135.72 : x
  2. Step 2: Convert to fraction form
    388,800.48/581,883.52 = 239,135.72/x
  3. Step 3: Cross multiply
    388,800.48x = 581,883.52 × 239,135.72
  4. Step 4: Simplify right side
    388,800.48x = 139,149,134,511.33
  5. Step 5: Solve for x
    x = 139,149,134,511.33/388,800.48
  6. Step 6: Final answer
    x = 357,893.42

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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.