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Finding the Fourth Proportional to 343,935.60, 515,903.40 and 259,954.80

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Solution

The fourth proportional to 343,935.60, 515,903.40 and 259,954.80 is: 389,932.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,935.60 : 515,903.40 = 259,954.80 : x
  2. Step 2: Convert to fraction form
    343,935.60/515,903.40 = 259,954.80/x
  3. Step 3: Cross multiply
    343,935.60x = 515,903.40 × 259,954.80
  4. Step 4: Simplify right side
    343,935.60x = 134,111,565,166.32
  5. Step 5: Solve for x
    x = 134,111,565,166.32/343,935.60
  6. Step 6: Final answer
    x = 389,932.20

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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.