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Finding the Fourth Proportional to 343,703.39, 515,549.41 and 141,258.47

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Solution

The fourth proportional to 343,703.39, 515,549.41 and 141,258.47 is: 211,885.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,703.39 : 515,549.41 = 141,258.47 : x
  2. Step 2: Convert to fraction form
    343,703.39/515,549.41 = 141,258.47/x
  3. Step 3: Cross multiply
    343,703.39x = 515,549.41 × 141,258.47
  4. Step 4: Simplify right side
    343,703.39x = 72,825,720,866.00
  5. Step 5: Solve for x
    x = 72,825,720,866.00/343,703.39
  6. Step 6: Final answer
    x = 211,885.37

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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.