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Finding the Fourth Proportional to 317,223.20, 476,223.60 and 314,890.40

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Solution

The fourth proportional to 317,223.20, 476,223.60 and 314,890.40 is: 472,721.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,223.20 : 476,223.60 = 314,890.40 : x
  2. Step 2: Convert to fraction form
    317,223.20/476,223.60 = 314,890.40/x
  3. Step 3: Cross multiply
    317,223.20x = 476,223.60 × 314,890.40
  4. Step 4: Simplify right side
    317,223.20x = 149,958,239,893.44
  5. Step 5: Solve for x
    x = 149,958,239,893.44/317,223.20
  6. Step 6: Final answer
    x = 472,721.54

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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.