Home / 261,856.08-361,345.32-154,430.64

Finding the Fourth Proportional to 261,856.08, 361,345.32 and 154,430.64

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Solution

The fourth proportional to 261,856.08, 361,345.32 and 154,430.64 is: 213,104.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,856.08 : 361,345.32 = 154,430.64 : x
  2. Step 2: Convert to fraction form
    261,856.08/361,345.32 = 154,430.64/x
  3. Step 3: Cross multiply
    261,856.08x = 361,345.32 × 154,430.64
  4. Step 4: Simplify right side
    261,856.08x = 55,802,789,028.60
  5. Step 5: Solve for x
    x = 55,802,789,028.60/261,856.08
  6. Step 6: Final answer
    x = 213,104.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.