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Finding the Fourth Proportional to 388,295.56, 536,013.20 and 261,044.96

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Solution

The fourth proportional to 388,295.56, 536,013.20 and 261,044.96 is: 360,353.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,295.56 : 536,013.20 = 261,044.96 : x
  2. Step 2: Convert to fraction form
    388,295.56/536,013.20 = 261,044.96/x
  3. Step 3: Cross multiply
    388,295.56x = 536,013.20 × 261,044.96
  4. Step 4: Simplify right side
    388,295.56x = 139,923,544,353.47
  5. Step 5: Solve for x
    x = 139,923,544,353.47/388,295.56
  6. Step 6: Final answer
    x = 360,353.19

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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.