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Finding the Fourth Proportional to 339,980.60, 510,096.45 and 140,318.30

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Solution

The fourth proportional to 339,980.60, 510,096.45 and 140,318.30 is: 210,529.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,980.60 : 510,096.45 = 140,318.30 : x
  2. Step 2: Convert to fraction form
    339,980.60/510,096.45 = 140,318.30/x
  3. Step 3: Cross multiply
    339,980.60x = 510,096.45 × 140,318.30
  4. Step 4: Simplify right side
    339,980.60x = 71,575,866,700.04
  5. Step 5: Solve for x
    x = 71,575,866,700.04/339,980.60
  6. Step 6: Final answer
    x = 210,529.27

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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.