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Finding the Fourth Proportional to 268,287.52, 370,238.80 and 145,781.07

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Solution

The fourth proportional to 268,287.52, 370,238.80 and 145,781.07 is: 201,178.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,287.52 : 370,238.80 = 145,781.07 : x
  2. Step 2: Convert to fraction form
    268,287.52/370,238.80 = 145,781.07/x
  3. Step 3: Cross multiply
    268,287.52x = 370,238.80 × 145,781.07
  4. Step 4: Simplify right side
    268,287.52x = 53,973,806,940.01
  5. Step 5: Solve for x
    x = 53,973,806,940.01/268,287.52
  6. Step 6: Final answer
    x = 201,178.97

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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.