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Finding the Fourth Proportional to 540,315.35, 810,473.01 and 203,431.59

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Solution

The fourth proportional to 540,315.35, 810,473.01 and 203,431.59 is: 305,147.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,315.35 : 810,473.01 = 203,431.59 : x
  2. Step 2: Convert to fraction form
    540,315.35/810,473.01 = 203,431.59/x
  3. Step 3: Cross multiply
    540,315.35x = 810,473.01 × 203,431.59
  4. Step 4: Simplify right side
    540,315.35x = 164,875,813,076.39
  5. Step 5: Solve for x
    x = 164,875,813,076.39/540,315.35
  6. Step 6: Final answer
    x = 305,147.38

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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.