Home / 266,321.93-398,706.50-139,661.82

Finding the Fourth Proportional to 266,321.93, 398,706.50 and 139,661.82

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Solution

The fourth proportional to 266,321.93, 398,706.50 and 139,661.82 is: 209,085.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,321.93 : 398,706.50 = 139,661.82 : x
  2. Step 2: Convert to fraction form
    266,321.93/398,706.50 = 139,661.82/x
  3. Step 3: Cross multiply
    266,321.93x = 398,706.50 × 139,661.82
  4. Step 4: Simplify right side
    266,321.93x = 55,684,075,784.98
  5. Step 5: Solve for x
    x = 55,684,075,784.98/266,321.93
  6. Step 6: Final answer
    x = 209,085.59

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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.