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Finding the Fourth Proportional to 371,639.22, 512,871.60 and 210,491.88

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Solution

The fourth proportional to 371,639.22, 512,871.60 and 210,491.88 is: 290,484.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,639.22 : 512,871.60 = 210,491.88 : x
  2. Step 2: Convert to fraction form
    371,639.22/512,871.60 = 210,491.88/x
  3. Step 3: Cross multiply
    371,639.22x = 512,871.60 × 210,491.88
  4. Step 4: Simplify right side
    371,639.22x = 107,955,307,282.61
  5. Step 5: Solve for x
    x = 107,955,307,282.61/371,639.22
  6. Step 6: Final answer
    x = 290,484.16

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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.