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Finding the Fourth Proportional to 367,640.90, 551,461.35 and 209,885.30

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Solution

The fourth proportional to 367,640.90, 551,461.35 and 209,885.30 is: 314,827.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,640.90 : 551,461.35 = 209,885.30 : x
  2. Step 2: Convert to fraction form
    367,640.90/551,461.35 = 209,885.30/x
  3. Step 3: Cross multiply
    367,640.90x = 551,461.35 × 209,885.30
  4. Step 4: Simplify right side
    367,640.90x = 115,743,630,883.16
  5. Step 5: Solve for x
    x = 115,743,630,883.16/367,640.90
  6. Step 6: Final answer
    x = 314,827.95

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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.