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Finding the Fourth Proportional to 354,466.41, 488,994.81 and 239,785.20

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Solution

The fourth proportional to 354,466.41, 488,994.81 and 239,785.20 is: 330,789.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,466.41 : 488,994.81 = 239,785.20 : x
  2. Step 2: Convert to fraction form
    354,466.41/488,994.81 = 239,785.20/x
  3. Step 3: Cross multiply
    354,466.41x = 488,994.81 × 239,785.20
  4. Step 4: Simplify right side
    354,466.41x = 117,253,718,314.81
  5. Step 5: Solve for x
    x = 117,253,718,314.81/354,466.41
  6. Step 6: Final answer
    x = 330,789.36

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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.