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Finding the Fourth Proportional to 641,130.48, 961,783.20 and 267,066

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Solution

The fourth proportional to 641,130.48, 961,783.20 and 267,066 is: 400,635.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,130.48 : 961,783.20 = 267,066 : x
  2. Step 2: Convert to fraction form
    641,130.48/961,783.20 = 267,066/x
  3. Step 3: Cross multiply
    641,130.48x = 961,783.20 × 267,066
  4. Step 4: Simplify right side
    641,130.48x = 256,859,592,091.20
  5. Step 5: Solve for x
    x = 256,859,592,091.20/641,130.48
  6. Step 6: Final answer
    x = 400,635.44

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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.