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Finding the Fourth Proportional to 307,527.81, 424,388.57 and 171,561.76

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Solution

The fourth proportional to 307,527.81, 424,388.57 and 171,561.76 is: 236,755.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,527.81 : 424,388.57 = 171,561.76 : x
  2. Step 2: Convert to fraction form
    307,527.81/424,388.57 = 171,561.76/x
  3. Step 3: Cross multiply
    307,527.81x = 424,388.57 × 171,561.76
  4. Step 4: Simplify right side
    307,527.81x = 72,808,849,478.20
  5. Step 5: Solve for x
    x = 72,808,849,478.20/307,527.81
  6. Step 6: Final answer
    x = 236,755.33

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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.