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Finding the Fourth Proportional to 290,448,443.80, 435,672,665.70 and 108,672,002.20

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Solution

The fourth proportional to 290,448,443.80, 435,672,665.70 and 108,672,002.20 is: 163,008,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,448,443.80 : 435,672,665.70 = 108,672,002.20 : x
  2. Step 2: Convert to fraction form
    290,448,443.80/435,672,665.70 = 108,672,002.20/x
  3. Step 3: Cross multiply
    290,448,443.80x = 435,672,665.70 × 108,672,002.20
  4. Step 4: Simplify right side
    290,448,443.80x = 47,345,420,885,430,264
  5. Step 5: Solve for x
    x = 47,345,420,885,430,264/290,448,443.80
  6. Step 6: Final answer
    x = 163,008,003.30

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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.