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Finding the Fourth Proportional to 371,896.43, 513,215.06 and 210,781.94

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Solution

The fourth proportional to 371,896.43, 513,215.06 and 210,781.94 is: 290,877.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,896.43 : 513,215.06 = 210,781.94 : x
  2. Step 2: Convert to fraction form
    371,896.43/513,215.06 = 210,781.94/x
  3. Step 3: Cross multiply
    371,896.43x = 513,215.06 × 210,781.94
  4. Step 4: Simplify right side
    371,896.43x = 108,176,462,364.03
  5. Step 5: Solve for x
    x = 108,176,462,364.03/371,896.43
  6. Step 6: Final answer
    x = 290,877.93

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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.