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Finding the Fourth Proportional to 554,469.90, 831,702.42 and 217,272.30

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Solution

The fourth proportional to 554,469.90, 831,702.42 and 217,272.30 is: 325,907.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,469.90 : 831,702.42 = 217,272.30 : x
  2. Step 2: Convert to fraction form
    554,469.90/831,702.42 = 217,272.30/x
  3. Step 3: Cross multiply
    554,469.90x = 831,702.42 × 217,272.30
  4. Step 4: Simplify right side
    554,469.90x = 180,705,897,708.97
  5. Step 5: Solve for x
    x = 180,705,897,708.97/554,469.90
  6. Step 6: Final answer
    x = 325,907.50

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Double scale
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Similar ratio
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1.5x scale

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.