Home / 208,189.76-312,595.68-205,079.36

Finding the Fourth Proportional to 208,189.76, 312,595.68 and 205,079.36

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Solution

The fourth proportional to 208,189.76, 312,595.68 and 205,079.36 is: 307,925.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,189.76 : 312,595.68 = 205,079.36 : x
  2. Step 2: Convert to fraction form
    208,189.76/312,595.68 = 205,079.36/x
  3. Step 3: Cross multiply
    208,189.76x = 312,595.68 × 205,079.36
  4. Step 4: Simplify right side
    208,189.76x = 64,106,921,993.16
  5. Step 5: Solve for x
    x = 64,106,921,993.16/208,189.76
  6. Step 6: Final answer
    x = 307,925.43

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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.