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Finding the Fourth Proportional to 356,942.15, 535,888.39 and 207,289.86

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Solution

The fourth proportional to 356,942.15, 535,888.39 and 207,289.86 is: 311,210.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,942.15 : 535,888.39 = 207,289.86 : x
  2. Step 2: Convert to fraction form
    356,942.15/535,888.39 = 207,289.86/x
  3. Step 3: Cross multiply
    356,942.15x = 535,888.39 × 207,289.86
  4. Step 4: Simplify right side
    356,942.15x = 111,084,229,338.73
  5. Step 5: Solve for x
    x = 111,084,229,338.73/356,942.15
  6. Step 6: Final answer
    x = 311,210.74

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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.