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Finding the Fourth Proportional to 323,767,839.60, 485,651,759.40 and 220,455,709.20

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Solution

The fourth proportional to 323,767,839.60, 485,651,759.40 and 220,455,709.20 is: 330,683,563.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,767,839.60 : 485,651,759.40 = 220,455,709.20 : x
  2. Step 2: Convert to fraction form
    323,767,839.60/485,651,759.40 = 220,455,709.20/x
  3. Step 3: Cross multiply
    323,767,839.60x = 485,651,759.40 × 220,455,709.20
  4. Step 4: Simplify right side
    323,767,839.60x = 107,064,703,042,754,752
  5. Step 5: Solve for x
    x = 107,064,703,042,754,752/323,767,839.60
  6. Step 6: Final answer
    x = 330,683,563.80

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1.5x scale

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.