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Finding the Fourth Proportional to 371,663.82, 557,562.93 and 135,338.22

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Solution

The fourth proportional to 371,663.82, 557,562.93 and 135,338.22 is: 203,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,663.82 : 557,562.93 = 135,338.22 : x
  2. Step 2: Convert to fraction form
    371,663.82/557,562.93 = 135,338.22/x
  3. Step 3: Cross multiply
    371,663.82x = 557,562.93 × 135,338.22
  4. Step 4: Simplify right side
    371,663.82x = 75,459,574,484.18
  5. Step 5: Solve for x
    x = 75,459,574,484.18/371,663.82
  6. Step 6: Final answer
    x = 203,031.80

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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.