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Finding the Fourth Proportional to 353,122.40, 529,683.60 and 211,404.80

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Solution

The fourth proportional to 353,122.40, 529,683.60 and 211,404.80 is: 317,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,122.40 : 529,683.60 = 211,404.80 : x
  2. Step 2: Convert to fraction form
    353,122.40/529,683.60 = 211,404.80/x
  3. Step 3: Cross multiply
    353,122.40x = 529,683.60 × 211,404.80
  4. Step 4: Simplify right side
    353,122.40x = 111,977,655,521.28
  5. Step 5: Solve for x
    x = 111,977,655,521.28/353,122.40
  6. Step 6: Final answer
    x = 317,107.20

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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.