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Finding the Fourth Proportional to 339,436.88, 509,220.88 and 129,058.46

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Solution

The fourth proportional to 339,436.88, 509,220.88 and 129,058.46 is: 193,612.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,436.88 : 509,220.88 = 129,058.46 : x
  2. Step 2: Convert to fraction form
    339,436.88/509,220.88 = 129,058.46/x
  3. Step 3: Cross multiply
    339,436.88x = 509,220.88 × 129,058.46
  4. Step 4: Simplify right side
    339,436.88x = 65,719,262,572.64
  5. Step 5: Solve for x
    x = 65,719,262,572.64/339,436.88
  6. Step 6: Final answer
    x = 193,612.62

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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.