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Finding the Fourth Proportional to 353,345.54, 487,890.53 and 271,544.21

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Solution

The fourth proportional to 353,345.54, 487,890.53 and 271,544.21 is: 374,941.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,345.54 : 487,890.53 = 271,544.21 : x
  2. Step 2: Convert to fraction form
    353,345.54/487,890.53 = 271,544.21/x
  3. Step 3: Cross multiply
    353,345.54x = 487,890.53 × 271,544.21
  4. Step 4: Simplify right side
    353,345.54x = 132,483,844,738.16
  5. Step 5: Solve for x
    x = 132,483,844,738.16/353,345.54
  6. Step 6: Final answer
    x = 374,941.33

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1.5x scale

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.