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Finding the Fourth Proportional to 339,773.18, 509,647.95 and 87,055.76

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Solution

The fourth proportional to 339,773.18, 509,647.95 and 87,055.76 is: 130,580.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,773.18 : 509,647.95 = 87,055.76 : x
  2. Step 2: Convert to fraction form
    339,773.18/509,647.95 = 87,055.76/x
  3. Step 3: Cross multiply
    339,773.18x = 509,647.95 × 87,055.76
  4. Step 4: Simplify right side
    339,773.18x = 44,367,790,893.81
  5. Step 5: Solve for x
    x = 44,367,790,893.81/339,773.18
  6. Step 6: Final answer
    x = 130,580.62

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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.