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Finding the Fourth Proportional to 339,815.80, 509,432.10 and 173,603.80

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Solution

The fourth proportional to 339,815.80, 509,432.10 and 173,603.80 is: 260,256.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,815.80 : 509,432.10 = 173,603.80 : x
  2. Step 2: Convert to fraction form
    339,815.80/509,432.10 = 173,603.80/x
  3. Step 3: Cross multiply
    339,815.80x = 509,432.10 × 173,603.80
  4. Step 4: Simplify right side
    339,815.80x = 88,439,348,401.98
  5. Step 5: Solve for x
    x = 88,439,348,401.98/339,815.80
  6. Step 6: Final answer
    x = 260,256.73

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1.5x scale

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.