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Finding the Fourth Proportional to 660,113.25, 990,324.29 and 204,680.52

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Solution

The fourth proportional to 660,113.25, 990,324.29 and 204,680.52 is: 307,068.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,113.25 : 990,324.29 = 204,680.52 : x
  2. Step 2: Convert to fraction form
    660,113.25/990,324.29 = 204,680.52/x
  3. Step 3: Cross multiply
    660,113.25x = 990,324.29 × 204,680.52
  4. Step 4: Simplify right side
    660,113.25x = 202,700,091,157.53
  5. Step 5: Solve for x
    x = 202,700,091,157.53/660,113.25
  6. Step 6: Final answer
    x = 307,068.66

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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.