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Finding the Fourth Proportional to 551,415.40, 827,123.10 and 235,904.20

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Solution

The fourth proportional to 551,415.40, 827,123.10 and 235,904.20 is: 353,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,415.40 : 827,123.10 = 235,904.20 : x
  2. Step 2: Convert to fraction form
    551,415.40/827,123.10 = 235,904.20/x
  3. Step 3: Cross multiply
    551,415.40x = 827,123.10 × 235,904.20
  4. Step 4: Simplify right side
    551,415.40x = 195,121,813,207.02
  5. Step 5: Solve for x
    x = 195,121,813,207.02/551,415.40
  6. Step 6: Final answer
    x = 353,856.30

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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.