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Finding the Fourth Proportional to 343,427.84, 515,057.76 and 268,361.79

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Solution

The fourth proportional to 343,427.84, 515,057.76 and 268,361.79 is: 402,477.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,427.84 : 515,057.76 = 268,361.79 : x
  2. Step 2: Convert to fraction form
    343,427.84/515,057.76 = 268,361.79/x
  3. Step 3: Cross multiply
    343,427.84x = 515,057.76 × 268,361.79
  4. Step 4: Simplify right side
    343,427.84x = 138,221,822,426.99
  5. Step 5: Solve for x
    x = 138,221,822,426.99/343,427.84
  6. Step 6: Final answer
    x = 402,477.05

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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.