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Finding the Fourth Proportional to 480,496.88, 663,104.40 and 319,073.60

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Solution

The fourth proportional to 480,496.88, 663,104.40 and 319,073.60 is: 440,333.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,496.88 : 663,104.40 = 319,073.60 : x
  2. Step 2: Convert to fraction form
    480,496.88/663,104.40 = 319,073.60/x
  3. Step 3: Cross multiply
    480,496.88x = 663,104.40 × 319,073.60
  4. Step 4: Simplify right side
    480,496.88x = 211,579,108,083.84
  5. Step 5: Solve for x
    x = 211,579,108,083.84/480,496.88
  6. Step 6: Final answer
    x = 440,333.99

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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.