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Finding the Fourth Proportional to 399,759,502.80, 599,639,254.20 and 195,418,664.40

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Solution

The fourth proportional to 399,759,502.80, 599,639,254.20 and 195,418,664.40 is: 293,127,996.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,759,502.80 : 599,639,254.20 = 195,418,664.40 : x
  2. Step 2: Convert to fraction form
    399,759,502.80/599,639,254.20 = 195,418,664.40/x
  3. Step 3: Cross multiply
    399,759,502.80x = 599,639,254.20 × 195,418,664.40
  4. Step 4: Simplify right side
    399,759,502.80x = 117,180,702,177,576,096
  5. Step 5: Solve for x
    x = 117,180,702,177,576,096/399,759,502.80
  6. Step 6: Final answer
    x = 293,127,996.60

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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.