Home / 208,823.40-312,543.90-161,821.80

Finding the Fourth Proportional to 208,823.40, 312,543.90 and 161,821.80

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Solution

The fourth proportional to 208,823.40, 312,543.90 and 161,821.80 is: 242,197.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,823.40 : 312,543.90 = 161,821.80 : x
  2. Step 2: Convert to fraction form
    208,823.40/312,543.90 = 161,821.80/x
  3. Step 3: Cross multiply
    208,823.40x = 312,543.90 × 161,821.80
  4. Step 4: Simplify right side
    208,823.40x = 50,576,416,477.02
  5. Step 5: Solve for x
    x = 50,576,416,477.02/208,823.40
  6. Step 6: Final answer
    x = 242,197.07

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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.