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Finding the Fourth Proportional to 268,053.71, 369,920.56 and 145,551.30

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Solution

The fourth proportional to 268,053.71, 369,920.56 and 145,551.30 is: 200,864.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,053.71 : 369,920.56 = 145,551.30 : x
  2. Step 2: Convert to fraction form
    268,053.71/369,920.56 = 145,551.30/x
  3. Step 3: Cross multiply
    268,053.71x = 369,920.56 × 145,551.30
  4. Step 4: Simplify right side
    268,053.71x = 53,842,418,404.73
  5. Step 5: Solve for x
    x = 53,842,418,404.73/268,053.71
  6. Step 6: Final answer
    x = 200,864.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.