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Finding the Fourth Proportional to 443,005.20, 664,054.20 and 218,019.60

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Solution

The fourth proportional to 443,005.20, 664,054.20 and 218,019.60 is: 326,806.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,005.20 : 664,054.20 = 218,019.60 : x
  2. Step 2: Convert to fraction form
    443,005.20/664,054.20 = 218,019.60/x
  3. Step 3: Cross multiply
    443,005.20x = 664,054.20 × 218,019.60
  4. Step 4: Simplify right side
    443,005.20x = 144,776,831,062.32
  5. Step 5: Solve for x
    x = 144,776,831,062.32/443,005.20
  6. Step 6: Final answer
    x = 326,806.17

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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.