Home / 208,109,015.22-287,169,512.46-115,272,177.42

Finding the Fourth Proportional to 208,109,015.22, 287,169,512.46 and 115,272,177.42

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Solution

The fourth proportional to 208,109,015.22, 287,169,512.46 and 115,272,177.42 is: 159,064,012.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,109,015.22 : 287,169,512.46 = 115,272,177.42 : x
  2. Step 2: Convert to fraction form
    208,109,015.22/287,169,512.46 = 115,272,177.42/x
  3. Step 3: Cross multiply
    208,109,015.22x = 287,169,512.46 × 115,272,177.42
  4. Step 4: Simplify right side
    208,109,015.22x = 33,102,654,989,904,020
  5. Step 5: Solve for x
    x = 33,102,654,989,904,020/208,109,015.22
  6. Step 6: Final answer
    x = 159,064,012.46

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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.