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Finding the Fourth Proportional to 478,570.46, 717,869.61 and 178,993.88

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Solution

The fourth proportional to 478,570.46, 717,869.61 and 178,993.88 is: 268,496.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,570.46 : 717,869.61 = 178,993.88 : x
  2. Step 2: Convert to fraction form
    478,570.46/717,869.61 = 178,993.88/x
  3. Step 3: Cross multiply
    478,570.46x = 717,869.61 × 178,993.88
  4. Step 4: Simplify right side
    478,570.46x = 128,494,268,622.66
  5. Step 5: Solve for x
    x = 128,494,268,622.66/478,570.46
  6. Step 6: Final answer
    x = 268,496.03

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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.