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Finding the Fourth Proportional to 339,780.60, 509,670.90 and 103,122.90

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Solution

The fourth proportional to 339,780.60, 509,670.90 and 103,122.90 is: 154,684.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,780.60 : 509,670.90 = 103,122.90 : x
  2. Step 2: Convert to fraction form
    339,780.60/509,670.90 = 103,122.90/x
  3. Step 3: Cross multiply
    339,780.60x = 509,670.90 × 103,122.90
  4. Step 4: Simplify right side
    339,780.60x = 52,558,741,253.61
  5. Step 5: Solve for x
    x = 52,558,741,253.61/339,780.60
  6. Step 6: Final answer
    x = 154,684.35

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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.