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Finding the Fourth Proportional to 320,006.20, 480,009.30 and 231,878.20

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Solution

The fourth proportional to 320,006.20, 480,009.30 and 231,878.20 is: 347,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,006.20 : 480,009.30 = 231,878.20 : x
  2. Step 2: Convert to fraction form
    320,006.20/480,009.30 = 231,878.20/x
  3. Step 3: Cross multiply
    320,006.20x = 480,009.30 × 231,878.20
  4. Step 4: Simplify right side
    320,006.20x = 111,303,692,467.26
  5. Step 5: Solve for x
    x = 111,303,692,467.26/320,006.20
  6. Step 6: Final answer
    x = 347,817.30

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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.