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Finding the Fourth Proportional to 307,309.08, 424,088.70 and 171,351.93

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Solution

The fourth proportional to 307,309.08, 424,088.70 and 171,351.93 is: 236,466.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,309.08 : 424,088.70 = 171,351.93 : x
  2. Step 2: Convert to fraction form
    307,309.08/424,088.70 = 171,351.93/x
  3. Step 3: Cross multiply
    307,309.08x = 424,088.70 × 171,351.93
  4. Step 4: Simplify right side
    307,309.08x = 72,668,417,236.19
  5. Step 5: Solve for x
    x = 72,668,417,236.19/307,309.08
  6. Step 6: Final answer
    x = 236,466.87

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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.