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Finding the Fourth Proportional to 210,627.80, 315,327.30 and 204,483.80

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Solution

The fourth proportional to 210,627.80, 315,327.30 and 204,483.80 is: 306,129.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,627.80 : 315,327.30 = 204,483.80 : x
  2. Step 2: Convert to fraction form
    210,627.80/315,327.30 = 204,483.80/x
  3. Step 3: Cross multiply
    210,627.80x = 315,327.30 × 204,483.80
  4. Step 4: Simplify right side
    210,627.80x = 64,479,324,547.74
  5. Step 5: Solve for x
    x = 64,479,324,547.74/210,627.80
  6. Step 6: Final answer
    x = 306,129.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.