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Finding the Fourth Proportional to 212,490.49, 318,790.89 and 94,133.69

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Solution

The fourth proportional to 212,490.49, 318,790.89 and 94,133.69 is: 141,224.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,490.49 : 318,790.89 = 94,133.69 : x
  2. Step 2: Convert to fraction form
    212,490.49/318,790.89 = 94,133.69/x
  3. Step 3: Cross multiply
    212,490.49x = 318,790.89 × 94,133.69
  4. Step 4: Simplify right side
    212,490.49x = 30,008,964,208.79
  5. Step 5: Solve for x
    x = 30,008,964,208.79/212,490.49
  6. Step 6: Final answer
    x = 141,224.98

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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.