Home / 211,418,412.30-317,033,140.05-81,983,004.30

Finding the Fourth Proportional to 211,418,412.30, 317,033,140.05 and 81,983,004.30

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Solution

The fourth proportional to 211,418,412.30, 317,033,140.05 and 81,983,004.30 is: 122,937,869.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,418,412.30 : 317,033,140.05 = 81,983,004.30 : x
  2. Step 2: Convert to fraction form
    211,418,412.30/317,033,140.05 = 81,983,004.30/x
  3. Step 3: Cross multiply
    211,418,412.30x = 317,033,140.05 × 81,983,004.30
  4. Step 4: Simplify right side
    211,418,412.30x = 25,991,329,283,961,652
  5. Step 5: Solve for x
    x = 25,991,329,283,961,652/211,418,412.30
  6. Step 6: Final answer
    x = 122,937,869.99

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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.