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Finding the Fourth Proportional to 347,976.40, 480,438.72 and 267,259.72

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Solution

The fourth proportional to 347,976.40, 480,438.72 and 267,259.72 is: 368,996.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,976.40 : 480,438.72 = 267,259.72 : x
  2. Step 2: Convert to fraction form
    347,976.40/480,438.72 = 267,259.72/x
  3. Step 3: Cross multiply
    347,976.40x = 480,438.72 × 267,259.72
  4. Step 4: Simplify right side
    347,976.40x = 128,401,917,784.36
  5. Step 5: Solve for x
    x = 128,401,917,784.36/347,976.40
  6. Step 6: Final answer
    x = 368,996.05

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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.