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Finding the Fourth Proportional to 299,440,230.80, 449,328,307.80 and 126,887,680.40

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Solution

The fourth proportional to 299,440,230.80, 449,328,307.80 and 126,887,680.40 is: 190,402,694.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,440,230.80 : 449,328,307.80 = 126,887,680.40 : x
  2. Step 2: Convert to fraction form
    299,440,230.80/449,328,307.80 = 126,887,680.40/x
  3. Step 3: Cross multiply
    299,440,230.80x = 449,328,307.80 × 126,887,680.40
  4. Step 4: Simplify right side
    299,440,230.80x = 57,014,226,714,799,232
  5. Step 5: Solve for x
    x = 57,014,226,714,799,232/299,440,230.80
  6. Step 6: Final answer
    x = 190,402,694.26

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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.