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Finding the Fourth Proportional to 267,574,485.80, 401,361,728.70 and 85,840,034.60

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Solution

The fourth proportional to 267,574,485.80, 401,361,728.70 and 85,840,034.60 is: 128,760,051.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,574,485.80 : 401,361,728.70 = 85,840,034.60 : x
  2. Step 2: Convert to fraction form
    267,574,485.80/401,361,728.70 = 85,840,034.60/x
  3. Step 3: Cross multiply
    267,574,485.80x = 401,361,728.70 × 85,840,034.60
  4. Step 4: Simplify right side
    267,574,485.80x = 34,452,904,678,723,808
  5. Step 5: Solve for x
    x = 34,452,904,678,723,808/267,574,485.80
  6. Step 6: Final answer
    x = 128,760,051.90

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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.