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Finding the Fourth Proportional to 657,051.60, 985,699.08 and 207,885.54

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Solution

The fourth proportional to 657,051.60, 985,699.08 and 207,885.54 is: 311,866.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,051.60 : 985,699.08 = 207,885.54 : x
  2. Step 2: Convert to fraction form
    657,051.60/985,699.08 = 207,885.54/x
  3. Step 3: Cross multiply
    657,051.60x = 985,699.08 × 207,885.54
  4. Step 4: Simplify right side
    657,051.60x = 204,912,585,523.30
  5. Step 5: Solve for x
    x = 204,912,585,523.30/657,051.60
  6. Step 6: Final answer
    x = 311,866.81

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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.