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Finding the Fourth Proportional to 517,841.88, 776,772.54 and 143,874.60

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Solution

The fourth proportional to 517,841.88, 776,772.54 and 143,874.60 is: 215,814.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,841.88 : 776,772.54 = 143,874.60 : x
  2. Step 2: Convert to fraction form
    517,841.88/776,772.54 = 143,874.60/x
  3. Step 3: Cross multiply
    517,841.88x = 776,772.54 × 143,874.60
  4. Step 4: Simplify right side
    517,841.88x = 111,757,838,483.48
  5. Step 5: Solve for x
    x = 111,757,838,483.48/517,841.88
  6. Step 6: Final answer
    x = 215,814.60

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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.