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Finding the Fourth Proportional to 452,560.28, 678,927.74 and 172,055.68

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Solution

The fourth proportional to 452,560.28, 678,927.74 and 172,055.68 is: 258,116.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,560.28 : 678,927.74 = 172,055.68 : x
  2. Step 2: Convert to fraction form
    452,560.28/678,927.74 = 172,055.68/x
  3. Step 3: Cross multiply
    452,560.28x = 678,927.74 × 172,055.68
  4. Step 4: Simplify right side
    452,560.28x = 116,813,373,976.56
  5. Step 5: Solve for x
    x = 116,813,373,976.56/452,560.28
  6. Step 6: Final answer
    x = 258,116.72

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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.