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Finding the Fourth Proportional to 267,574,480.80, 401,361,721.20 and 85,840,029.60

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Solution

The fourth proportional to 267,574,480.80, 401,361,721.20 and 85,840,029.60 is: 128,760,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,574,480.80 : 401,361,721.20 = 85,840,029.60 : x
  2. Step 2: Convert to fraction form
    267,574,480.80/401,361,721.20 = 85,840,029.60/x
  3. Step 3: Cross multiply
    267,574,480.80x = 401,361,721.20 × 85,840,029.60
  4. Step 4: Simplify right side
    267,574,480.80x = 34,452,902,028,114,944
  5. Step 5: Solve for x
    x = 34,452,902,028,114,944/267,574,480.80
  6. Step 6: Final answer
    x = 128,760,044.40

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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.