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Finding the Fourth Proportional to 311,955.80, 430,551.94 and 176,028.29

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Solution

The fourth proportional to 311,955.80, 430,551.94 and 176,028.29 is: 242,948.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,955.80 : 430,551.94 = 176,028.29 : x
  2. Step 2: Convert to fraction form
    311,955.80/430,551.94 = 176,028.29/x
  3. Step 3: Cross multiply
    311,955.80x = 430,551.94 × 176,028.29
  4. Step 4: Simplify right side
    311,955.80x = 75,789,319,601.62
  5. Step 5: Solve for x
    x = 75,789,319,601.62/311,955.80
  6. Step 6: Final answer
    x = 242,948.90

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1.5x scale

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.