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Finding the Fourth Proportional to 339,577.03, 509,360.31 and 86,855.29

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Solution

The fourth proportional to 339,577.03, 509,360.31 and 86,855.29 is: 130,281.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,577.03 : 509,360.31 = 86,855.29 : x
  2. Step 2: Convert to fraction form
    339,577.03/509,360.31 = 86,855.29/x
  3. Step 3: Cross multiply
    339,577.03x = 509,360.31 × 86,855.29
  4. Step 4: Simplify right side
    339,577.03x = 44,240,637,439.54
  5. Step 5: Solve for x
    x = 44,240,637,439.54/339,577.03
  6. Step 6: Final answer
    x = 130,281.60

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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.