Home / 321,209,127.64-481,812,723.78-91,178,407

Finding the Fourth Proportional to 321,209,127.64, 481,812,723.78 and 91,178,407

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Solution

The fourth proportional to 321,209,127.64, 481,812,723.78 and 91,178,407 is: 136,767,335.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,209,127.64 : 481,812,723.78 = 91,178,407 : x
  2. Step 2: Convert to fraction form
    321,209,127.64/481,812,723.78 = 91,178,407/x
  3. Step 3: Cross multiply
    321,209,127.64x = 481,812,723.78 × 91,178,407
  4. Step 4: Simplify right side
    321,209,127.64x = 43,930,916,626,591,416
  5. Step 5: Solve for x
    x = 43,930,916,626,591,416/321,209,127.64
  6. Step 6: Final answer
    x = 136,767,335.81

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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.