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Finding the Fourth Proportional to 213,112.12, 319,720.80 and 63,351.77

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Solution

The fourth proportional to 213,112.12, 319,720.80 and 63,351.77 is: 95,043.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,112.12 : 319,720.80 = 63,351.77 : x
  2. Step 2: Convert to fraction form
    213,112.12/319,720.80 = 63,351.77/x
  3. Step 3: Cross multiply
    213,112.12x = 319,720.80 × 63,351.77
  4. Step 4: Simplify right side
    213,112.12x = 20,254,878,269.06
  5. Step 5: Solve for x
    x = 20,254,878,269.06/213,112.12
  6. Step 6: Final answer
    x = 95,043.30

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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.