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Finding the Fourth Proportional to 147,211.40, 220,817.10 and 53,753.60

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Solution

The fourth proportional to 147,211.40, 220,817.10 and 53,753.60 is: 80,630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,211.40 : 220,817.10 = 53,753.60 : x
  2. Step 2: Convert to fraction form
    147,211.40/220,817.10 = 53,753.60/x
  3. Step 3: Cross multiply
    147,211.40x = 220,817.10 × 53,753.60
  4. Step 4: Simplify right side
    147,211.40x = 11,869,714,066.56
  5. Step 5: Solve for x
    x = 11,869,714,066.56/147,211.40
  6. Step 6: Final answer
    x = 80,630.40

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1.5x scale

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.