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Finding the Fourth Proportional to 670,670.60, 1,006,005.90 and 221,460.80

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Solution

The fourth proportional to 670,670.60, 1,006,005.90 and 221,460.80 is: 332,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,670.60 : 1,006,005.90 = 221,460.80 : x
  2. Step 2: Convert to fraction form
    670,670.60/1,006,005.90 = 221,460.80/x
  3. Step 3: Cross multiply
    670,670.60x = 1,006,005.90 × 221,460.80
  4. Step 4: Simplify right side
    670,670.60x = 222,790,871,418.72
  5. Step 5: Solve for x
    x = 222,790,871,418.72/670,670.60
  6. Step 6: Final answer
    x = 332,191.20

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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.