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Finding the Fourth Proportional to 282,516, 389,872.08 and 155,193.72

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Solution

The fourth proportional to 282,516, 389,872.08 and 155,193.72 is: 214,167.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,516 : 389,872.08 = 155,193.72 : x
  2. Step 2: Convert to fraction form
    282,516/389,872.08 = 155,193.72/x
  3. Step 3: Cross multiply
    282,516x = 389,872.08 × 155,193.72
  4. Step 4: Simplify right side
    282,516x = 60,505,698,419.34
  5. Step 5: Solve for x
    x = 60,505,698,419.34/282,516
  6. Step 6: Final answer
    x = 214,167.33

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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.