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Finding the Fourth Proportional to 480,495.88, 663,103.02 and 319,072.60

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Solution

The fourth proportional to 480,495.88, 663,103.02 and 319,072.60 is: 440,332.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,495.88 : 663,103.02 = 319,072.60 : x
  2. Step 2: Convert to fraction form
    480,495.88/663,103.02 = 319,072.60/x
  3. Step 3: Cross multiply
    480,495.88x = 663,103.02 × 319,072.60
  4. Step 4: Simplify right side
    480,495.88x = 211,578,004,659.25
  5. Step 5: Solve for x
    x = 211,578,004,659.25/480,495.88
  6. Step 6: Final answer
    x = 440,332.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.