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Finding the Fourth Proportional to 207,362.21, 310,800.56 and 79,194.51

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Solution

The fourth proportional to 207,362.21, 310,800.56 and 79,194.51 is: 118,699.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,362.21 : 310,800.56 = 79,194.51 : x
  2. Step 2: Convert to fraction form
    207,362.21/310,800.56 = 79,194.51/x
  3. Step 3: Cross multiply
    207,362.21x = 310,800.56 × 79,194.51
  4. Step 4: Simplify right side
    207,362.21x = 24,613,697,660.95
  5. Step 5: Solve for x
    x = 24,613,697,660.95/207,362.21
  6. Step 6: Final answer
    x = 118,699.05

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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.