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Finding the Fourth Proportional to 212,813.74, 319,267.31 and 63,065.75

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Solution

The fourth proportional to 212,813.74, 319,267.31 and 63,065.75 is: 94,612.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,813.74 : 319,267.31 = 63,065.75 : x
  2. Step 2: Convert to fraction form
    212,813.74/319,267.31 = 63,065.75/x
  3. Step 3: Cross multiply
    212,813.74x = 319,267.31 × 63,065.75
  4. Step 4: Simplify right side
    212,813.74x = 20,134,830,443.97
  5. Step 5: Solve for x
    x = 20,134,830,443.97/212,813.74
  6. Step 6: Final answer
    x = 94,612.45

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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.