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Finding the Fourth Proportional to 212,665.51, 319,060.64 and 62,909.74

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Solution

The fourth proportional to 212,665.51, 319,060.64 and 62,909.74 is: 94,383.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,665.51 : 319,060.64 = 62,909.74 : x
  2. Step 2: Convert to fraction form
    212,665.51/319,060.64 = 62,909.74/x
  3. Step 3: Cross multiply
    212,665.51x = 319,060.64 × 62,909.74
  4. Step 4: Simplify right side
    212,665.51x = 20,072,021,906.63
  5. Step 5: Solve for x
    x = 20,072,021,906.63/212,665.51
  6. Step 6: Final answer
    x = 94,383.06

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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.