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Finding the Fourth Proportional to 213,150.40, 319,725.56 and 63,390.08

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Solution

The fourth proportional to 213,150.40, 319,725.56 and 63,390.08 is: 95,085.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,150.40 : 319,725.56 = 63,390.08 : x
  2. Step 2: Convert to fraction form
    213,150.40/319,725.56 = 63,390.08/x
  3. Step 3: Cross multiply
    213,150.40x = 319,725.56 × 63,390.08
  4. Step 4: Simplify right side
    213,150.40x = 20,267,428,826.44
  5. Step 5: Solve for x
    x = 20,267,428,826.44/213,150.40
  6. Step 6: Final answer
    x = 95,085.11

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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.