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Finding the Fourth Proportional to 384,766.80, 530,702.70 and 270,071.06

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Solution

The fourth proportional to 384,766.80, 530,702.70 and 270,071.06 is: 372,504.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,766.80 : 530,702.70 = 270,071.06 : x
  2. Step 2: Convert to fraction form
    384,766.80/530,702.70 = 270,071.06/x
  3. Step 3: Cross multiply
    384,766.80x = 530,702.70 × 270,071.06
  4. Step 4: Simplify right side
    384,766.80x = 143,327,440,733.86
  5. Step 5: Solve for x
    x = 143,327,440,733.86/384,766.80
  6. Step 6: Final answer
    x = 372,504.70

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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.