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Finding the Fourth Proportional to 378,077,171.80, 566,891,808.90 and 196,678,643.80

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Solution

The fourth proportional to 378,077,171.80, 566,891,808.90 and 196,678,643.80 is: 294,901,465.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,077,171.80 : 566,891,808.90 = 196,678,643.80 : x
  2. Step 2: Convert to fraction form
    378,077,171.80/566,891,808.90 = 196,678,643.80/x
  3. Step 3: Cross multiply
    378,077,171.80x = 566,891,808.90 × 196,678,643.80
  4. Step 4: Simplify right side
    378,077,171.80x = 111,495,512,155,780,768
  5. Step 5: Solve for x
    x = 111,495,512,155,780,768/378,077,171.80
  6. Step 6: Final answer
    x = 294,901,465.82

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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.