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Finding the Fourth Proportional to 348,060.80, 521,702.40 and 198,372.80

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Solution

The fourth proportional to 348,060.80, 521,702.40 and 198,372.80 is: 297,337.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,060.80 : 521,702.40 = 198,372.80 : x
  2. Step 2: Convert to fraction form
    348,060.80/521,702.40 = 198,372.80/x
  3. Step 3: Cross multiply
    348,060.80x = 521,702.40 × 198,372.80
  4. Step 4: Simplify right side
    348,060.80x = 103,491,565,854.72
  5. Step 5: Solve for x
    x = 103,491,565,854.72/348,060.80
  6. Step 6: Final answer
    x = 297,337.61

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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.