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Finding the Fourth Proportional to 248,587.80, 372,935.70 and 90,816

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Solution

The fourth proportional to 248,587.80, 372,935.70 and 90,816 is: 136,243.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,587.80 : 372,935.70 = 90,816 : x
  2. Step 2: Convert to fraction form
    248,587.80/372,935.70 = 90,816/x
  3. Step 3: Cross multiply
    248,587.80x = 372,935.70 × 90,816
  4. Step 4: Simplify right side
    248,587.80x = 33,868,528,531.20
  5. Step 5: Solve for x
    x = 33,868,528,531.20/248,587.80
  6. Step 6: Final answer
    x = 136,243.73

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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.