Home / 321,209,126.64-481,812,722.28-91,178,406

Finding the Fourth Proportional to 321,209,126.64, 481,812,722.28 and 91,178,406

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Solution

The fourth proportional to 321,209,126.64, 481,812,722.28 and 91,178,406 is: 136,767,334.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,209,126.64 : 481,812,722.28 = 91,178,406 : x
  2. Step 2: Convert to fraction form
    321,209,126.64/481,812,722.28 = 91,178,406/x
  3. Step 3: Cross multiply
    321,209,126.64x = 481,812,722.28 × 91,178,406
  4. Step 4: Simplify right side
    321,209,126.64x = 43,930,916,008,011,080
  5. Step 5: Solve for x
    x = 43,930,916,008,011,080/321,209,126.64
  6. Step 6: Final answer
    x = 136,767,334.31

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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.