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Finding the Fourth Proportional to 478,568.16, 717,866.16 and 178,991.58

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Solution

The fourth proportional to 478,568.16, 717,866.16 and 178,991.58 is: 268,492.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,568.16 : 717,866.16 = 178,991.58 : x
  2. Step 2: Convert to fraction form
    478,568.16/717,866.16 = 178,991.58/x
  3. Step 3: Cross multiply
    478,568.16x = 717,866.16 × 178,991.58
  4. Step 4: Simplify right side
    478,568.16x = 128,491,998,206.93
  5. Step 5: Solve for x
    x = 128,491,998,206.93/478,568.16
  6. Step 6: Final answer
    x = 268,492.58

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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.