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Finding the Fourth Proportional to 620,732.26, 931,079.94 and 171,480.16

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Solution

The fourth proportional to 620,732.26, 931,079.94 and 171,480.16 is: 257,215.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,732.26 : 931,079.94 = 171,480.16 : x
  2. Step 2: Convert to fraction form
    620,732.26/931,079.94 = 171,480.16/x
  3. Step 3: Cross multiply
    620,732.26x = 931,079.94 × 171,480.16
  4. Step 4: Simplify right side
    620,732.26x = 159,661,737,083.99
  5. Step 5: Solve for x
    x = 159,661,737,083.99/620,732.26
  6. Step 6: Final answer
    x = 257,215.14

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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.