Home / 208,179,717.32-287,289,721.50-115,361,775.20

Finding the Fourth Proportional to 208,179,717.32, 287,289,721.50 and 115,361,775.20

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Solution

The fourth proportional to 208,179,717.32, 287,289,721.50 and 115,361,775.20 is: 159,200,198.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,179,717.32 : 287,289,721.50 = 115,361,775.20 : x
  2. Step 2: Convert to fraction form
    208,179,717.32/287,289,721.50 = 115,361,775.20/x
  3. Step 3: Cross multiply
    208,179,717.32x = 287,289,721.50 × 115,361,775.20
  4. Step 4: Simplify right side
    208,179,717.32x = 33,142,252,268,953,608
  5. Step 5: Solve for x
    x = 33,142,252,268,953,608/208,179,717.32
  6. Step 6: Final answer
    x = 159,200,198.25

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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.