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Finding the Fourth Proportional to 371,524.40, 512,703.62 and 210,379.40

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Solution

The fourth proportional to 371,524.40, 512,703.62 and 210,379.40 is: 290,323.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,524.40 : 512,703.62 = 210,379.40 : x
  2. Step 2: Convert to fraction form
    371,524.40/512,703.62 = 210,379.40/x
  3. Step 3: Cross multiply
    371,524.40x = 512,703.62 × 210,379.40
  4. Step 4: Simplify right side
    371,524.40x = 107,862,279,953.43
  5. Step 5: Solve for x
    x = 107,862,279,953.43/371,524.40
  6. Step 6: Final answer
    x = 290,323.54

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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.