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Finding the Fourth Proportional to 429,574.92, 644,479.02 and 130,065.54

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Solution

The fourth proportional to 429,574.92, 644,479.02 and 130,065.54 is: 195,133.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,574.92 : 644,479.02 = 130,065.54 : x
  2. Step 2: Convert to fraction form
    429,574.92/644,479.02 = 130,065.54/x
  3. Step 3: Cross multiply
    429,574.92x = 644,479.02 × 130,065.54
  4. Step 4: Simplify right side
    429,574.92x = 83,824,511,754.97
  5. Step 5: Solve for x
    x = 83,824,511,754.97/429,574.92
  6. Step 6: Final answer
    x = 195,133.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.