Home / 208,456.50-312,681.44-66,299.72

Finding the Fourth Proportional to 208,456.50, 312,681.44 and 66,299.72

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Solution

The fourth proportional to 208,456.50, 312,681.44 and 66,299.72 is: 99,448.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,456.50 : 312,681.44 = 66,299.72 : x
  2. Step 2: Convert to fraction form
    208,456.50/312,681.44 = 66,299.72/x
  3. Step 3: Cross multiply
    208,456.50x = 312,681.44 × 66,299.72
  4. Step 4: Simplify right side
    208,456.50x = 20,730,691,696.09
  5. Step 5: Solve for x
    x = 20,730,691,696.09/208,456.50
  6. Step 6: Final answer
    x = 99,448.53

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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.