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Finding the Fourth Proportional to 371,524.15, 512,703.28 and 210,379.15

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Solution

The fourth proportional to 371,524.15, 512,703.28 and 210,379.15 is: 290,323.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,524.15 : 512,703.28 = 210,379.15 : x
  2. Step 2: Convert to fraction form
    371,524.15/512,703.28 = 210,379.15/x
  3. Step 3: Cross multiply
    371,524.15x = 512,703.28 × 210,379.15
  4. Step 4: Simplify right side
    371,524.15x = 107,862,079,196.72
  5. Step 5: Solve for x
    x = 107,862,079,196.72/371,524.15
  6. Step 6: Final answer
    x = 290,323.20

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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.