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Finding the Fourth Proportional to 371,603, 557,432.31 and 105,384.96

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Solution

The fourth proportional to 371,603, 557,432.31 and 105,384.96 is: 158,085.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,603 : 557,432.31 = 105,384.96 : x
  2. Step 2: Convert to fraction form
    371,603/557,432.31 = 105,384.96/x
  3. Step 3: Cross multiply
    371,603x = 557,432.31 × 105,384.96
  4. Step 4: Simplify right side
    371,603x = 58,744,981,692.06
  5. Step 5: Solve for x
    x = 58,744,981,692.06/371,603
  6. Step 6: Final answer
    x = 158,085.33

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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.