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Finding the Fourth Proportional to 453,920, 680,818.70 and 187,643.58

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Solution

The fourth proportional to 453,920, 680,818.70 and 187,643.58 is: 281,440.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,920 : 680,818.70 = 187,643.58 : x
  2. Step 2: Convert to fraction form
    453,920/680,818.70 = 187,643.58/x
  3. Step 3: Cross multiply
    453,920x = 680,818.70 × 187,643.58
  4. Step 4: Simplify right side
    453,920x = 127,751,258,198.95
  5. Step 5: Solve for x
    x = 127,751,258,198.95/453,920
  6. Step 6: Final answer
    x = 281,440.03

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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.