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Finding the Fourth Proportional to 302,169.39, 453,161.25 and 99,728.21

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Solution

The fourth proportional to 302,169.39, 453,161.25 and 99,728.21 is: 149,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,169.39 : 453,161.25 = 99,728.21 : x
  2. Step 2: Convert to fraction form
    302,169.39/453,161.25 = 99,728.21/x
  3. Step 3: Cross multiply
    302,169.39x = 453,161.25 × 99,728.21
  4. Step 4: Simplify right side
    302,169.39x = 45,192,958,038.06
  5. Step 5: Solve for x
    x = 45,192,958,038.06/302,169.39
  6. Step 6: Final answer
    x = 149,561.67

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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.