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Finding the Fourth Proportional to 478,485.58, 717,704.46 and 178,944.10

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Solution

The fourth proportional to 478,485.58, 717,704.46 and 178,944.10 is: 268,407.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,485.58 : 717,704.46 = 178,944.10 : x
  2. Step 2: Convert to fraction form
    478,485.58/717,704.46 = 178,944.10/x
  3. Step 3: Cross multiply
    478,485.58x = 717,704.46 × 178,944.10
  4. Step 4: Simplify right side
    478,485.58x = 128,428,978,660.69
  5. Step 5: Solve for x
    x = 128,428,978,660.69/478,485.58
  6. Step 6: Final answer
    x = 268,407.21

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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.