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Finding the Fourth Proportional to 235,496.79, 324,871.29 and 139,935.81

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Solution

The fourth proportional to 235,496.79, 324,871.29 and 139,935.81 is: 193,043.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,496.79 : 324,871.29 = 139,935.81 : x
  2. Step 2: Convert to fraction form
    235,496.79/324,871.29 = 139,935.81/x
  3. Step 3: Cross multiply
    235,496.79x = 324,871.29 × 139,935.81
  4. Step 4: Simplify right side
    235,496.79x = 45,461,127,111.89
  5. Step 5: Solve for x
    x = 45,461,127,111.89/235,496.79
  6. Step 6: Final answer
    x = 193,043.51

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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.