Home / 386,209,313.92-532,965,135.52-209,997,374.56

Finding the Fourth Proportional to 386,209,313.92, 532,965,135.52 and 209,997,374.56

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Solution

The fourth proportional to 386,209,313.92, 532,965,135.52 and 209,997,374.56 is: 289,794,355.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,209,313.92 : 532,965,135.52 = 209,997,374.56 : x
  2. Step 2: Convert to fraction form
    386,209,313.92/532,965,135.52 = 209,997,374.56/x
  3. Step 3: Cross multiply
    386,209,313.92x = 532,965,135.52 × 209,997,374.56
  4. Step 4: Simplify right side
    386,209,313.92x = 111,921,279,191,214,592
  5. Step 5: Solve for x
    x = 111,921,279,191,214,592/386,209,313.92
  6. Step 6: Final answer
    x = 289,794,355.44

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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.