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Finding the Fourth Proportional to 354,660.66, 489,504.58 and 216,863.16

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Solution

The fourth proportional to 354,660.66, 489,504.58 and 216,863.16 is: 299,315.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,660.66 : 489,504.58 = 216,863.16 : x
  2. Step 2: Convert to fraction form
    354,660.66/489,504.58 = 216,863.16/x
  3. Step 3: Cross multiply
    354,660.66x = 489,504.58 × 216,863.16
  4. Step 4: Simplify right side
    354,660.66x = 106,155,510,053.27
  5. Step 5: Solve for x
    x = 106,155,510,053.27/354,660.66
  6. Step 6: Final answer
    x = 299,315.72

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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.