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Finding the Fourth Proportional to 268,009.88, 401,907.54 and 118,143.66

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Solution

The fourth proportional to 268,009.88, 401,907.54 and 118,143.66 is: 177,168.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,009.88 : 401,907.54 = 118,143.66 : x
  2. Step 2: Convert to fraction form
    268,009.88/401,907.54 = 118,143.66/x
  3. Step 3: Cross multiply
    268,009.88x = 401,907.54 × 118,143.66
  4. Step 4: Simplify right side
    268,009.88x = 47,482,827,757.20
  5. Step 5: Solve for x
    x = 47,482,827,757.20/268,009.88
  6. Step 6: Final answer
    x = 177,168.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.