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Finding the Fourth Proportional to 208,051.40, 312,077.10 and 183,945.80

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Solution

The fourth proportional to 208,051.40, 312,077.10 and 183,945.80 is: 275,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,051.40 : 312,077.10 = 183,945.80 : x
  2. Step 2: Convert to fraction form
    208,051.40/312,077.10 = 183,945.80/x
  3. Step 3: Cross multiply
    208,051.40x = 312,077.10 × 183,945.80
  4. Step 4: Simplify right side
    208,051.40x = 57,405,271,821.18
  5. Step 5: Solve for x
    x = 57,405,271,821.18/208,051.40
  6. Step 6: Final answer
    x = 275,918.70

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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.