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Finding the Fourth Proportional to 207,656.68, 311,485.02 and 118,848.28

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Solution

The fourth proportional to 207,656.68, 311,485.02 and 118,848.28 is: 178,272.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,656.68 : 311,485.02 = 118,848.28 : x
  2. Step 2: Convert to fraction form
    207,656.68/311,485.02 = 118,848.28/x
  3. Step 3: Cross multiply
    207,656.68x = 311,485.02 × 118,848.28
  4. Step 4: Simplify right side
    207,656.68x = 37,019,458,872.77
  5. Step 5: Solve for x
    x = 37,019,458,872.77/207,656.68
  6. Step 6: Final answer
    x = 178,272.42

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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.