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Finding the Fourth Proportional to 559,538.80, 839,308.20 and 185,561.80

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Solution

The fourth proportional to 559,538.80, 839,308.20 and 185,561.80 is: 278,342.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,538.80 : 839,308.20 = 185,561.80 : x
  2. Step 2: Convert to fraction form
    559,538.80/839,308.20 = 185,561.80/x
  3. Step 3: Cross multiply
    559,538.80x = 839,308.20 × 185,561.80
  4. Step 4: Simplify right side
    559,538.80x = 155,743,540,346.76
  5. Step 5: Solve for x
    x = 155,743,540,346.76/559,538.80
  6. Step 6: Final answer
    x = 278,342.70

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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.