Home / 430,554.06-645,969.51-131,092.65

Finding the Fourth Proportional to 430,554.06, 645,969.51 and 131,092.65

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Solution

The fourth proportional to 430,554.06, 645,969.51 and 131,092.65 is: 196,681.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,554.06 : 645,969.51 = 131,092.65 : x
  2. Step 2: Convert to fraction form
    430,554.06/645,969.51 = 131,092.65/x
  3. Step 3: Cross multiply
    430,554.06x = 645,969.51 × 131,092.65
  4. Step 4: Simplify right side
    430,554.06x = 84,681,854,885.10
  5. Step 5: Solve for x
    x = 84,681,854,885.10/430,554.06
  6. Step 6: Final answer
    x = 196,681.12

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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.