Home / 330,126.21-457,904.92-321,376.11

Finding the Fourth Proportional to 330,126.21, 457,904.92 and 321,376.11

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Solution

The fourth proportional to 330,126.21, 457,904.92 and 321,376.11 is: 445,768.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,126.21 : 457,904.92 = 321,376.11 : x
  2. Step 2: Convert to fraction form
    330,126.21/457,904.92 = 321,376.11/x
  3. Step 3: Cross multiply
    330,126.21x = 457,904.92 × 321,376.11
  4. Step 4: Simplify right side
    330,126.21x = 147,159,701,357.32
  5. Step 5: Solve for x
    x = 147,159,701,357.32/330,126.21
  6. Step 6: Final answer
    x = 445,768.01

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.