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Finding the Fourth Proportional to 343,539.60, 515,309.40 and 254,966.10

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Solution

The fourth proportional to 343,539.60, 515,309.40 and 254,966.10 is: 382,449.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,539.60 : 515,309.40 = 254,966.10 : x
  2. Step 2: Convert to fraction form
    343,539.60/515,309.40 = 254,966.10/x
  3. Step 3: Cross multiply
    343,539.60x = 515,309.40 × 254,966.10
  4. Step 4: Simplify right side
    343,539.60x = 131,386,428,011.34
  5. Step 5: Solve for x
    x = 131,386,428,011.34/343,539.60
  6. Step 6: Final answer
    x = 382,449.15

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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.