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Finding the Fourth Proportional to 540,358.40, 810,538.24 and 140,998.88

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Solution

The fourth proportional to 540,358.40, 810,538.24 and 140,998.88 is: 211,498.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,358.40 : 810,538.24 = 140,998.88 : x
  2. Step 2: Convert to fraction form
    540,358.40/810,538.24 = 140,998.88/x
  3. Step 3: Cross multiply
    540,358.40x = 810,538.24 × 140,998.88
  4. Step 4: Simplify right side
    540,358.40x = 114,284,984,037.17
  5. Step 5: Solve for x
    x = 114,284,984,037.17/540,358.40
  6. Step 6: Final answer
    x = 211,498.49

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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.