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Finding the Fourth Proportional to 201,581,796.80, 302,372,695.20 and 80,500,145.60

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Solution

The fourth proportional to 201,581,796.80, 302,372,695.20 and 80,500,145.60 is: 120,750,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,581,796.80 : 302,372,695.20 = 80,500,145.60 : x
  2. Step 2: Convert to fraction form
    201,581,796.80/302,372,695.20 = 80,500,145.60/x
  3. Step 3: Cross multiply
    201,581,796.80x = 302,372,695.20 × 80,500,145.60
  4. Step 4: Simplify right side
    201,581,796.80x = 24,341,045,989,064,420
  5. Step 5: Solve for x
    x = 24,341,045,989,064,420/201,581,796.80
  6. Step 6: Final answer
    x = 120,750,218.40

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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.