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Finding the Fourth Proportional to 478,618.14, 717,966.09 and 174,978.30

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Solution

The fourth proportional to 478,618.14, 717,966.09 and 174,978.30 is: 262,481.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,618.14 : 717,966.09 = 174,978.30 : x
  2. Step 2: Convert to fraction form
    478,618.14/717,966.09 = 174,978.30/x
  3. Step 3: Cross multiply
    478,618.14x = 717,966.09 × 174,978.30
  4. Step 4: Simplify right side
    478,618.14x = 125,628,485,885.85
  5. Step 5: Solve for x
    x = 125,628,485,885.85/478,618.14
  6. Step 6: Final answer
    x = 262,481.66

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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.