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Finding the Fourth Proportional to 478,338.36, 717,548.76 and 123,349.44

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Solution

The fourth proportional to 478,338.36, 717,548.76 and 123,349.44 is: 185,034.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,338.36 : 717,548.76 = 123,349.44 : x
  2. Step 2: Convert to fraction form
    478,338.36/717,548.76 = 123,349.44/x
  3. Step 3: Cross multiply
    478,338.36x = 717,548.76 × 123,349.44
  4. Step 4: Simplify right side
    478,338.36x = 88,509,237,718.69
  5. Step 5: Solve for x
    x = 88,509,237,718.69/478,338.36
  6. Step 6: Final answer
    x = 185,034.79

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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.