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Finding the Fourth Proportional to 423,904.20, 635,856.30 and 174,586.20

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Solution

The fourth proportional to 423,904.20, 635,856.30 and 174,586.20 is: 261,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,904.20 : 635,856.30 = 174,586.20 : x
  2. Step 2: Convert to fraction form
    423,904.20/635,856.30 = 174,586.20/x
  3. Step 3: Cross multiply
    423,904.20x = 635,856.30 × 174,586.20
  4. Step 4: Simplify right side
    423,904.20x = 111,011,735,163.06
  5. Step 5: Solve for x
    x = 111,011,735,163.06/423,904.20
  6. Step 6: Final answer
    x = 261,879.30

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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.