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Finding the Fourth Proportional to 307,685.60, 424,606.52 and 171,719.54

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Solution

The fourth proportional to 307,685.60, 424,606.52 and 171,719.54 is: 236,973.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,685.60 : 424,606.52 = 171,719.54 : x
  2. Step 2: Convert to fraction form
    307,685.60/424,606.52 = 171,719.54/x
  3. Step 3: Cross multiply
    307,685.60x = 424,606.52 × 171,719.54
  4. Step 4: Simplify right side
    307,685.60x = 72,913,233,313.77
  5. Step 5: Solve for x
    x = 72,913,233,313.77/307,685.60
  6. Step 6: Final answer
    x = 236,973.18

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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.