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Finding the Fourth Proportional to 213,235.72, 319,745.58 and 124,511.56

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Solution

The fourth proportional to 213,235.72, 319,745.58 and 124,511.56 is: 186,704.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,235.72 : 319,745.58 = 124,511.56 : x
  2. Step 2: Convert to fraction form
    213,235.72/319,745.58 = 124,511.56/x
  3. Step 3: Cross multiply
    213,235.72x = 319,745.58 × 124,511.56
  4. Step 4: Simplify right side
    213,235.72x = 39,812,020,968.90
  5. Step 5: Solve for x
    x = 39,812,020,968.90/213,235.72
  6. Step 6: Final answer
    x = 186,704.28

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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.