Home / 378,397,772.64-522,090,104.58-221,680,633.14

Finding the Fourth Proportional to 378,397,772.64, 522,090,104.58 and 221,680,633.14

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Solution

The fourth proportional to 378,397,772.64, 522,090,104.58 and 221,680,633.14 is: 305,861,380.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,397,772.64 : 522,090,104.58 = 221,680,633.14 : x
  2. Step 2: Convert to fraction form
    378,397,772.64/522,090,104.58 = 221,680,633.14/x
  3. Step 3: Cross multiply
    378,397,772.64x = 522,090,104.58 × 221,680,633.14
  4. Step 4: Simplify right side
    378,397,772.64x = 115,737,264,939,423,200
  5. Step 5: Solve for x
    x = 115,737,264,939,423,200/378,397,772.64
  6. Step 6: Final answer
    x = 305,861,380.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.