Home / 221,698,386.81-331,723,846.62-139,433,091.48

Finding the Fourth Proportional to 221,698,386.81, 331,723,846.62 and 139,433,091.48

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Solution

The fourth proportional to 221,698,386.81, 331,723,846.62 and 139,433,091.48 is: 208,631,565.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,698,386.81 : 331,723,846.62 = 139,433,091.48 : x
  2. Step 2: Convert to fraction form
    221,698,386.81/331,723,846.62 = 139,433,091.48/x
  3. Step 3: Cross multiply
    221,698,386.81x = 331,723,846.62 × 139,433,091.48
  4. Step 4: Simplify right side
    221,698,386.81x = 46,253,281,451,863,944
  5. Step 5: Solve for x
    x = 46,253,281,451,863,944/221,698,386.81
  6. Step 6: Final answer
    x = 208,631,565.24

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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.