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Finding the Fourth Proportional to 353,115, 529,905.78 and 166,141.08

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Solution

The fourth proportional to 353,115, 529,905.78 and 166,141.08 is: 249,321.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,115 : 529,905.78 = 166,141.08 : x
  2. Step 2: Convert to fraction form
    353,115/529,905.78 = 166,141.08/x
  3. Step 3: Cross multiply
    353,115x = 529,905.78 × 166,141.08
  4. Step 4: Simplify right side
    353,115x = 88,039,118,587.44
  5. Step 5: Solve for x
    x = 88,039,118,587.44/353,115
  6. Step 6: Final answer
    x = 249,321.38

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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.