Home / 208,179,710.32-287,289,711.84-115,361,768.20

Finding the Fourth Proportional to 208,179,710.32, 287,289,711.84 and 115,361,768.20

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Solution

The fourth proportional to 208,179,710.32, 287,289,711.84 and 115,361,768.20 is: 159,200,188.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,179,710.32 : 287,289,711.84 = 115,361,768.20 : x
  2. Step 2: Convert to fraction form
    208,179,710.32/287,289,711.84 = 115,361,768.20/x
  3. Step 3: Cross multiply
    208,179,710.32x = 287,289,711.84 × 115,361,768.20
  4. Step 4: Simplify right side
    208,179,710.32x = 33,142,249,143,530,872
  5. Step 5: Solve for x
    x = 33,142,249,143,530,872/208,179,710.32
  6. Step 6: Final answer
    x = 159,200,188.59

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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.