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Finding the Fourth Proportional to 403,216.40, 604,824.60 and 206,608.40

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Solution

The fourth proportional to 403,216.40, 604,824.60 and 206,608.40 is: 309,912.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,216.40 : 604,824.60 = 206,608.40 : x
  2. Step 2: Convert to fraction form
    403,216.40/604,824.60 = 206,608.40/x
  3. Step 3: Cross multiply
    403,216.40x = 604,824.60 × 206,608.40
  4. Step 4: Simplify right side
    403,216.40x = 124,961,842,886.64
  5. Step 5: Solve for x
    x = 124,961,842,886.64/403,216.40
  6. Step 6: Final answer
    x = 309,912.60

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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.