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Finding the Fourth Proportional to 481,203.10, 721,804.65 and 256,476.70

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Solution

The fourth proportional to 481,203.10, 721,804.65 and 256,476.70 is: 384,715.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,203.10 : 721,804.65 = 256,476.70 : x
  2. Step 2: Convert to fraction form
    481,203.10/721,804.65 = 256,476.70/x
  3. Step 3: Cross multiply
    481,203.10x = 721,804.65 × 256,476.70
  4. Step 4: Simplify right side
    481,203.10x = 185,126,074,676.66
  5. Step 5: Solve for x
    x = 185,126,074,676.66/481,203.10
  6. Step 6: Final answer
    x = 384,715.05

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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.