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Finding the Fourth Proportional to 403,015.20, 604,911.60 and 203,560.80

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Solution

The fourth proportional to 403,015.20, 604,911.60 and 203,560.80 is: 305,537.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,015.20 : 604,911.60 = 203,560.80 : x
  2. Step 2: Convert to fraction form
    403,015.20/604,911.60 = 203,560.80/x
  3. Step 3: Cross multiply
    403,015.20x = 604,911.60 × 203,560.80
  4. Step 4: Simplify right side
    403,015.20x = 123,136,289,225.28
  5. Step 5: Solve for x
    x = 123,136,289,225.28/403,015.20
  6. Step 6: Final answer
    x = 305,537.58

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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.