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Finding the Fourth Proportional to 630,017.40, 944,421.30 and 209,076.60

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Solution

The fourth proportional to 630,017.40, 944,421.30 and 209,076.60 is: 313,414.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,017.40 : 944,421.30 = 209,076.60 : x
  2. Step 2: Convert to fraction form
    630,017.40/944,421.30 = 209,076.60/x
  3. Step 3: Cross multiply
    630,017.40x = 944,421.30 × 209,076.60
  4. Step 4: Simplify right side
    630,017.40x = 197,456,394,371.58
  5. Step 5: Solve for x
    x = 197,456,394,371.58/630,017.40
  6. Step 6: Final answer
    x = 313,414.19

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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.