Home / 385,441,473.73-531,909,908.52-209,229,588.45

Finding the Fourth Proportional to 385,441,473.73, 531,909,908.52 and 209,229,588.45

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Solution

The fourth proportional to 385,441,473.73, 531,909,908.52 and 209,229,588.45 is: 288,737,198.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,441,473.73 : 531,909,908.52 = 209,229,588.45 : x
  2. Step 2: Convert to fraction form
    385,441,473.73/531,909,908.52 = 209,229,588.45/x
  3. Step 3: Cross multiply
    385,441,473.73x = 531,909,908.52 × 209,229,588.45
  4. Step 4: Simplify right side
    385,441,473.73x = 111,291,291,252,667,968
  5. Step 5: Solve for x
    x = 111,291,291,252,667,968/385,441,473.73
  6. Step 6: Final answer
    x = 288,737,198.35

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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.