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Finding the Fourth Proportional to 212,678.44, 319,129.44 and 94,434.64

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Solution

The fourth proportional to 212,678.44, 319,129.44 and 94,434.64 is: 141,701.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,678.44 : 319,129.44 = 94,434.64 : x
  2. Step 2: Convert to fraction form
    212,678.44/319,129.44 = 94,434.64/x
  3. Step 3: Cross multiply
    212,678.44x = 319,129.44 × 94,434.64
  4. Step 4: Simplify right side
    212,678.44x = 30,136,873,779.80
  5. Step 5: Solve for x
    x = 30,136,873,779.80/212,678.44
  6. Step 6: Final answer
    x = 141,701.59

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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.