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Finding the Fourth Proportional to 478,297.58, 717,457.20 and 178,614.68

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Solution

The fourth proportional to 478,297.58, 717,457.20 and 178,614.68 is: 267,926.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,297.58 : 717,457.20 = 178,614.68 : x
  2. Step 2: Convert to fraction form
    478,297.58/717,457.20 = 178,614.68/x
  3. Step 3: Cross multiply
    478,297.58x = 717,457.20 × 178,614.68
  4. Step 4: Simplify right side
    478,297.58x = 128,148,388,191.70
  5. Step 5: Solve for x
    x = 128,148,388,191.70/478,297.58
  6. Step 6: Final answer
    x = 267,926.06

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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.