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Finding the Fourth Proportional to 207,669.78, 286,564.80 and 117,010.80

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Solution

The fourth proportional to 207,669.78, 286,564.80 and 117,010.80 is: 161,463.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,669.78 : 286,564.80 = 117,010.80 : x
  2. Step 2: Convert to fraction form
    207,669.78/286,564.80 = 117,010.80/x
  3. Step 3: Cross multiply
    207,669.78x = 286,564.80 × 117,010.80
  4. Step 4: Simplify right side
    207,669.78x = 33,531,176,499.84
  5. Step 5: Solve for x
    x = 33,531,176,499.84/207,669.78
  6. Step 6: Final answer
    x = 161,463.92

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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.