Home / 354,467.28-489,147.60-211,224.12

Finding the Fourth Proportional to 354,467.28, 489,147.60 and 211,224.12

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Solution

The fourth proportional to 354,467.28, 489,147.60 and 211,224.12 is: 291,479.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,467.28 : 489,147.60 = 211,224.12 : x
  2. Step 2: Convert to fraction form
    354,467.28/489,147.60 = 211,224.12/x
  3. Step 3: Cross multiply
    354,467.28x = 489,147.60 × 211,224.12
  4. Step 4: Simplify right side
    354,467.28x = 103,319,771,360.11
  5. Step 5: Solve for x
    x = 103,319,771,360.11/354,467.28
  6. Step 6: Final answer
    x = 291,479.01

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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.