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Finding the Fourth Proportional to 343,927.60, 515,891.40 and 259,946.80

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Solution

The fourth proportional to 343,927.60, 515,891.40 and 259,946.80 is: 389,920.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,927.60 : 515,891.40 = 259,946.80 : x
  2. Step 2: Convert to fraction form
    343,927.60/515,891.40 = 259,946.80/x
  3. Step 3: Cross multiply
    343,927.60x = 515,891.40 × 259,946.80
  4. Step 4: Simplify right side
    343,927.60x = 134,104,318,577.52
  5. Step 5: Solve for x
    x = 134,104,318,577.52/343,927.60
  6. Step 6: Final answer
    x = 389,920.20

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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.