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Finding the Fourth Proportional to 540,921.70, 811,459.35 and 166,905.70

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Solution

The fourth proportional to 540,921.70, 811,459.35 and 166,905.70 is: 250,382.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,921.70 : 811,459.35 = 166,905.70 : x
  2. Step 2: Convert to fraction form
    540,921.70/811,459.35 = 166,905.70/x
  3. Step 3: Cross multiply
    540,921.70x = 811,459.35 × 166,905.70
  4. Step 4: Simplify right side
    540,921.70x = 135,437,190,833.30
  5. Step 5: Solve for x
    x = 135,437,190,833.30/540,921.70
  6. Step 6: Final answer
    x = 250,382.25

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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.