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Finding the Fourth Proportional to 354,862,456.80, 531,497,422.80 and 291,161,464.80

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Solution

The fourth proportional to 354,862,456.80, 531,497,422.80 and 291,161,464.80 is: 436,088,871.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,862,456.80 : 531,497,422.80 = 291,161,464.80 : x
  2. Step 2: Convert to fraction form
    354,862,456.80/531,497,422.80 = 291,161,464.80/x
  3. Step 3: Cross multiply
    354,862,456.80x = 531,497,422.80 × 291,161,464.80
  4. Step 4: Simplify right side
    354,862,456.80x = 154,751,568,159,872,928
  5. Step 5: Solve for x
    x = 154,751,568,159,872,928/354,862,456.80
  6. Step 6: Final answer
    x = 436,088,871.04

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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.