Home / 642,361.18-963,221.15-210,022.32

Finding the Fourth Proportional to 642,361.18, 963,221.15 and 210,022.32

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Solution

The fourth proportional to 642,361.18, 963,221.15 and 210,022.32 is: 314,928.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,361.18 : 963,221.15 = 210,022.32 : x
  2. Step 2: Convert to fraction form
    642,361.18/963,221.15 = 210,022.32/x
  3. Step 3: Cross multiply
    642,361.18x = 963,221.15 × 210,022.32
  4. Step 4: Simplify right side
    642,361.18x = 202,297,945,127.00
  5. Step 5: Solve for x
    x = 202,297,945,127.00/642,361.18
  6. Step 6: Final answer
    x = 314,928.66

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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.