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Finding the Fourth Proportional to 339,595.18, 509,410.21 and 86,877.85

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Solution

The fourth proportional to 339,595.18, 509,410.21 and 86,877.85 is: 130,321.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,595.18 : 509,410.21 = 86,877.85 : x
  2. Step 2: Convert to fraction form
    339,595.18/509,410.21 = 86,877.85/x
  3. Step 3: Cross multiply
    339,595.18x = 509,410.21 × 86,877.85
  4. Step 4: Simplify right side
    339,595.18x = 44,256,462,487.80
  5. Step 5: Solve for x
    x = 44,256,462,487.80/339,595.18
  6. Step 6: Final answer
    x = 130,321.23

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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.