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Finding the Fourth Proportional to 212,835, 319,302.62 and 63,076.53

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Solution

The fourth proportional to 212,835, 319,302.62 and 63,076.53 is: 94,629.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,835 : 319,302.62 = 63,076.53 : x
  2. Step 2: Convert to fraction form
    212,835/319,302.62 = 63,076.53/x
  3. Step 3: Cross multiply
    212,835x = 319,302.62 × 63,076.53
  4. Step 4: Simplify right side
    212,835x = 20,140,500,974.13
  5. Step 5: Solve for x
    x = 20,140,500,974.13/212,835
  6. Step 6: Final answer
    x = 94,629.65

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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.