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Finding the Fourth Proportional to 220,070.01, 303,723.43 and 129,421.59

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Solution

The fourth proportional to 220,070.01, 303,723.43 and 129,421.59 is: 178,617.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,070.01 : 303,723.43 = 129,421.59 : x
  2. Step 2: Convert to fraction form
    220,070.01/303,723.43 = 129,421.59/x
  3. Step 3: Cross multiply
    220,070.01x = 303,723.43 × 129,421.59
  4. Step 4: Simplify right side
    220,070.01x = 39,308,369,230.85
  5. Step 5: Solve for x
    x = 39,308,369,230.85/220,070.01
  6. Step 6: Final answer
    x = 178,617.56

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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.