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Finding the Fourth Proportional to 354,304.20, 488,823 and 211,044.80

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Solution

The fourth proportional to 354,304.20, 488,823 and 211,044.80 is: 291,172.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,304.20 : 488,823 = 211,044.80 : x
  2. Step 2: Convert to fraction form
    354,304.20/488,823 = 211,044.80/x
  3. Step 3: Cross multiply
    354,304.20x = 488,823 × 211,044.80
  4. Step 4: Simplify right side
    354,304.20x = 103,163,552,270.40
  5. Step 5: Solve for x
    x = 103,163,552,270.40/354,304.20
  6. Step 6: Final answer
    x = 291,172.25

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