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Finding the Fourth Proportional to 347,478.72, 479,224.64 and 267,100.80

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Solution

The fourth proportional to 347,478.72, 479,224.64 and 267,100.80 is: 368,371.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,478.72 : 479,224.64 = 267,100.80 : x
  2. Step 2: Convert to fraction form
    347,478.72/479,224.64 = 267,100.80/x
  3. Step 3: Cross multiply
    347,478.72x = 479,224.64 × 267,100.80
  4. Step 4: Simplify right side
    347,478.72x = 128,001,284,723.71
  5. Step 5: Solve for x
    x = 128,001,284,723.71/347,478.72
  6. Step 6: Final answer
    x = 368,371.58

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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.