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Finding the Fourth Proportional to 306,087.60, 459,131.40 and 221,669.40

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Solution

The fourth proportional to 306,087.60, 459,131.40 and 221,669.40 is: 332,504.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,087.60 : 459,131.40 = 221,669.40 : x
  2. Step 2: Convert to fraction form
    306,087.60/459,131.40 = 221,669.40/x
  3. Step 3: Cross multiply
    306,087.60x = 459,131.40 × 221,669.40
  4. Step 4: Simplify right side
    306,087.60x = 101,775,381,959.16
  5. Step 5: Solve for x
    x = 101,775,381,959.16/306,087.60
  6. Step 6: Final answer
    x = 332,504.10

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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.