Home / 445,646.88-668,581.02-221,112.72

Finding the Fourth Proportional to 445,646.88, 668,581.02 and 221,112.72

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Solution

The fourth proportional to 445,646.88, 668,581.02 and 221,112.72 is: 331,724.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,646.88 : 668,581.02 = 221,112.72 : x
  2. Step 2: Convert to fraction form
    445,646.88/668,581.02 = 221,112.72/x
  3. Step 3: Cross multiply
    445,646.88x = 668,581.02 × 221,112.72
  4. Step 4: Simplify right side
    445,646.88x = 147,831,767,872.57
  5. Step 5: Solve for x
    x = 147,831,767,872.57/445,646.88
  6. Step 6: Final answer
    x = 331,724.01

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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.