Home / 430,537.06-645,943.97-131,075.61

Finding the Fourth Proportional to 430,537.06, 645,943.97 and 131,075.61

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Solution

The fourth proportional to 430,537.06, 645,943.97 and 131,075.61 is: 196,655.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,537.06 : 645,943.97 = 131,075.61 : x
  2. Step 2: Convert to fraction form
    430,537.06/645,943.97 = 131,075.61/x
  3. Step 3: Cross multiply
    430,537.06x = 645,943.97 × 131,075.61
  4. Step 4: Simplify right side
    430,537.06x = 84,667,499,893.57
  5. Step 5: Solve for x
    x = 84,667,499,893.57/430,537.06
  6. Step 6: Final answer
    x = 196,655.54

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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.