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Finding the Fourth Proportional to 356,790.79, 492,629.60 and 229,687.81

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Solution

The fourth proportional to 356,790.79, 492,629.60 and 229,687.81 is: 317,135.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,790.79 : 492,629.60 = 229,687.81 : x
  2. Step 2: Convert to fraction form
    356,790.79/492,629.60 = 229,687.81/x
  3. Step 3: Cross multiply
    356,790.79x = 492,629.60 × 229,687.81
  4. Step 4: Simplify right side
    356,790.79x = 113,151,013,965.18
  5. Step 5: Solve for x
    x = 113,151,013,965.18/356,790.79
  6. Step 6: Final answer
    x = 317,135.47

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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.