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Finding the Fourth Proportional to 289,187.55, 433,489.73 and 131,529.15

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Solution

The fourth proportional to 289,187.55, 433,489.73 and 131,529.15 is: 197,161.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,187.55 : 433,489.73 = 131,529.15 : x
  2. Step 2: Convert to fraction form
    289,187.55/433,489.73 = 131,529.15/x
  3. Step 3: Cross multiply
    289,187.55x = 433,489.73 × 131,529.15
  4. Step 4: Simplify right side
    289,187.55x = 57,016,535,062.98
  5. Step 5: Solve for x
    x = 57,016,535,062.98/289,187.55
  6. Step 6: Final answer
    x = 197,161.10

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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.