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Finding the Fourth Proportional to 311,901.46, 430,424.16 and 168,661.60

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Solution

The fourth proportional to 311,901.46, 430,424.16 and 168,661.60 is: 232,753.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,901.46 : 430,424.16 = 168,661.60 : x
  2. Step 2: Convert to fraction form
    311,901.46/430,424.16 = 168,661.60/x
  3. Step 3: Cross multiply
    311,901.46x = 430,424.16 × 168,661.60
  4. Step 4: Simplify right side
    311,901.46x = 72,596,027,504.26
  5. Step 5: Solve for x
    x = 72,596,027,504.26/311,901.46
  6. Step 6: Final answer
    x = 232,753.09

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.