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Finding the Fourth Proportional to 212,907.57, 319,306.86 and 63,112.84

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Solution

The fourth proportional to 212,907.57, 319,306.86 and 63,112.84 is: 94,653.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,907.57 : 319,306.86 = 63,112.84 : x
  2. Step 2: Convert to fraction form
    212,907.57/319,306.86 = 63,112.84/x
  3. Step 3: Cross multiply
    212,907.57x = 319,306.86 × 63,112.84
  4. Step 4: Simplify right side
    212,907.57x = 20,152,362,766.08
  5. Step 5: Solve for x
    x = 20,152,362,766.08/212,907.57
  6. Step 6: Final answer
    x = 94,653.11

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1.5x scale

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.