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Finding the Fourth Proportional to 312,372.96, 430,752.48 and 267,200.47

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Solution

The fourth proportional to 312,372.96, 430,752.48 and 267,200.47 is: 368,461.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,372.96 : 430,752.48 = 267,200.47 : x
  2. Step 2: Convert to fraction form
    312,372.96/430,752.48 = 267,200.47/x
  3. Step 3: Cross multiply
    312,372.96x = 430,752.48 × 267,200.47
  4. Step 4: Simplify right side
    312,372.96x = 115,097,266,149.11
  5. Step 5: Solve for x
    x = 115,097,266,149.11/312,372.96
  6. Step 6: Final answer
    x = 368,461.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.