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Finding the Fourth Proportional to 330,389.82, 495,661.14 and 117,146.43

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Solution

The fourth proportional to 330,389.82, 495,661.14 and 117,146.43 is: 175,746.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,389.82 : 495,661.14 = 117,146.43 : x
  2. Step 2: Convert to fraction form
    330,389.82/495,661.14 = 117,146.43/x
  3. Step 3: Cross multiply
    330,389.82x = 495,661.14 × 117,146.43
  4. Step 4: Simplify right side
    330,389.82x = 58,064,933,040.73
  5. Step 5: Solve for x
    x = 58,064,933,040.73/330,389.82
  6. Step 6: Final answer
    x = 175,746.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.