Home / 354,629.75-489,426.71-216,889.25

Finding the Fourth Proportional to 354,629.75, 489,426.71 and 216,889.25

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Solution

The fourth proportional to 354,629.75, 489,426.71 and 216,889.25 is: 299,330.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,629.75 : 489,426.71 = 216,889.25 : x
  2. Step 2: Convert to fraction form
    354,629.75/489,426.71 = 216,889.25/x
  3. Step 3: Cross multiply
    354,629.75x = 489,426.71 × 216,889.25
  4. Step 4: Simplify right side
    354,629.75x = 106,151,388,530.29
  5. Step 5: Solve for x
    x = 106,151,388,530.29/354,629.75
  6. Step 6: Final answer
    x = 299,330.19

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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.