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Finding the Fourth Proportional to 212,681.71, 319,051.72 and 94,350.43

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Solution

The fourth proportional to 212,681.71, 319,051.72 and 94,350.43 is: 141,538.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,681.71 : 319,051.72 = 94,350.43 : x
  2. Step 2: Convert to fraction form
    212,681.71/319,051.72 = 94,350.43/x
  3. Step 3: Cross multiply
    212,681.71x = 319,051.72 × 94,350.43
  4. Step 4: Simplify right side
    212,681.71x = 30,102,665,378.98
  5. Step 5: Solve for x
    x = 30,102,665,378.98/212,681.71
  6. Step 6: Final answer
    x = 141,538.57

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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.