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Finding the Fourth Proportional to 581,011.60, 871,344.60 and 225,821.20

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Solution

The fourth proportional to 581,011.60, 871,344.60 and 225,821.20 is: 338,664.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,011.60 : 871,344.60 = 225,821.20 : x
  2. Step 2: Convert to fraction form
    581,011.60/871,344.60 = 225,821.20/x
  3. Step 3: Cross multiply
    581,011.60x = 871,344.60 × 225,821.20
  4. Step 4: Simplify right side
    581,011.60x = 196,768,083,185.52
  5. Step 5: Solve for x
    x = 196,768,083,185.52/581,011.60
  6. Step 6: Final answer
    x = 338,664.64

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Double scale
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Similar ratio
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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.