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Finding the Fourth Proportional to 396,702.81, 594,927.86 and 130,401.77

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Solution

The fourth proportional to 396,702.81, 594,927.86 and 130,401.77 is: 195,561.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,702.81 : 594,927.86 = 130,401.77 : x
  2. Step 2: Convert to fraction form
    396,702.81/594,927.86 = 130,401.77/x
  3. Step 3: Cross multiply
    396,702.81x = 594,927.86 × 130,401.77
  4. Step 4: Simplify right side
    396,702.81x = 77,579,642,339.66
  5. Step 5: Solve for x
    x = 77,579,642,339.66/396,702.81
  6. Step 6: Final answer
    x = 195,561.11

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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.