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Finding the Fourth Proportional to 352,766.58, 486,894.87 and 216,917.40

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Solution

The fourth proportional to 352,766.58, 486,894.87 and 216,917.40 is: 299,393.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,766.58 : 486,894.87 = 216,917.40 : x
  2. Step 2: Convert to fraction form
    352,766.58/486,894.87 = 216,917.40/x
  3. Step 3: Cross multiply
    352,766.58x = 486,894.87 × 216,917.40
  4. Step 4: Simplify right side
    352,766.58x = 105,615,969,273.74
  5. Step 5: Solve for x
    x = 105,615,969,273.74/352,766.58
  6. Step 6: Final answer
    x = 299,393.35

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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.