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Finding the Fourth Proportional to 405,082.73, 607,655.12 and 120,751.55

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Solution

The fourth proportional to 405,082.73, 607,655.12 and 120,751.55 is: 181,136.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,082.73 : 607,655.12 = 120,751.55 : x
  2. Step 2: Convert to fraction form
    405,082.73/607,655.12 = 120,751.55/x
  3. Step 3: Cross multiply
    405,082.73x = 607,655.12 × 120,751.55
  4. Step 4: Simplify right side
    405,082.73x = 73,375,295,387.59
  5. Step 5: Solve for x
    x = 73,375,295,387.59/405,082.73
  6. Step 6: Final answer
    x = 181,136.57

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1.5x scale

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.