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Finding the Fourth Proportional to 339,581.40, 509,372.10 and 310,032.60

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Solution

The fourth proportional to 339,581.40, 509,372.10 and 310,032.60 is: 465,048.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,581.40 : 509,372.10 = 310,032.60 : x
  2. Step 2: Convert to fraction form
    339,581.40/509,372.10 = 310,032.60/x
  3. Step 3: Cross multiply
    339,581.40x = 509,372.10 × 310,032.60
  4. Step 4: Simplify right side
    339,581.40x = 157,921,956,530.46
  5. Step 5: Solve for x
    x = 157,921,956,530.46/339,581.40
  6. Step 6: Final answer
    x = 465,048.90

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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.