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Finding the Fourth Proportional to 478,567.67, 717,865.41 and 178,991.07

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Solution

The fourth proportional to 478,567.67, 717,865.41 and 178,991.07 is: 268,491.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,567.67 : 717,865.41 = 178,991.07 : x
  2. Step 2: Convert to fraction form
    478,567.67/717,865.41 = 178,991.07/x
  3. Step 3: Cross multiply
    478,567.67x = 717,865.41 × 178,991.07
  4. Step 4: Simplify right side
    478,567.67x = 128,491,497,851.89
  5. Step 5: Solve for x
    x = 128,491,497,851.89/478,567.67
  6. Step 6: Final answer
    x = 268,491.81

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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.