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Finding the Fourth Proportional to 339,708.40, 509,497.80 and 103,058.80

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Solution

The fourth proportional to 339,708.40, 509,497.80 and 103,058.80 is: 154,568.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,708.40 : 509,497.80 = 103,058.80 : x
  2. Step 2: Convert to fraction form
    339,708.40/509,497.80 = 103,058.80/x
  3. Step 3: Cross multiply
    339,708.40x = 509,497.80 × 103,058.80
  4. Step 4: Simplify right side
    339,708.40x = 52,508,231,870.64
  5. Step 5: Solve for x
    x = 52,508,231,870.64/339,708.40
  6. Step 6: Final answer
    x = 154,568.54

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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.