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Finding the Fourth Proportional to 371,767.90, 513,040.98 and 210,652.78

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Solution

The fourth proportional to 371,767.90, 513,040.98 and 210,652.78 is: 290,701.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,767.90 : 513,040.98 = 210,652.78 : x
  2. Step 2: Convert to fraction form
    371,767.90/513,040.98 = 210,652.78/x
  3. Step 3: Cross multiply
    371,767.90x = 513,040.98 × 210,652.78
  4. Step 4: Simplify right side
    371,767.90x = 108,073,508,690.92
  5. Step 5: Solve for x
    x = 108,073,508,690.92/371,767.90
  6. Step 6: Final answer
    x = 290,701.56

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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.