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Finding the Fourth Proportional to 358,702.40, 494,972.70 and 220,859.44

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Solution

The fourth proportional to 358,702.40, 494,972.70 and 220,859.44 is: 304,763.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,702.40 : 494,972.70 = 220,859.44 : x
  2. Step 2: Convert to fraction form
    358,702.40/494,972.70 = 220,859.44/x
  3. Step 3: Cross multiply
    358,702.40x = 494,972.70 × 220,859.44
  4. Step 4: Simplify right side
    358,702.40x = 109,319,393,337.29
  5. Step 5: Solve for x
    x = 109,319,393,337.29/358,702.40
  6. Step 6: Final answer
    x = 304,763.48

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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.