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Finding the Fourth Proportional to 206,695.40, 310,071.90 and 88,365.80

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Solution

The fourth proportional to 206,695.40, 310,071.90 and 88,365.80 is: 132,561.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,695.40 : 310,071.90 = 88,365.80 : x
  2. Step 2: Convert to fraction form
    206,695.40/310,071.90 = 88,365.80/x
  3. Step 3: Cross multiply
    206,695.40x = 310,071.90 × 88,365.80
  4. Step 4: Simplify right side
    206,695.40x = 27,399,751,501.02
  5. Step 5: Solve for x
    x = 27,399,751,501.02/206,695.40
  6. Step 6: Final answer
    x = 132,561.01

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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.