Home / 209,062.10-312,013.28-188,883.98

Finding the Fourth Proportional to 209,062.10, 312,013.28 and 188,883.98

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Solution

The fourth proportional to 209,062.10, 312,013.28 and 188,883.98 is: 281,898.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,062.10 : 312,013.28 = 188,883.98 : x
  2. Step 2: Convert to fraction form
    209,062.10/312,013.28 = 188,883.98/x
  3. Step 3: Cross multiply
    209,062.10x = 312,013.28 × 188,883.98
  4. Step 4: Simplify right side
    209,062.10x = 58,934,310,139.25
  5. Step 5: Solve for x
    x = 58,934,310,139.25/209,062.10
  6. Step 6: Final answer
    x = 281,898.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.