Home / 389,382,321.88-537,346,763.22-213,168,889

Finding the Fourth Proportional to 389,382,321.88, 537,346,763.22 and 213,168,889

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Solution

The fourth proportional to 389,382,321.88, 537,346,763.22 and 213,168,889 is: 294,172,606.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,382,321.88 : 537,346,763.22 = 213,168,889 : x
  2. Step 2: Convert to fraction form
    389,382,321.88/537,346,763.22 = 213,168,889/x
  3. Step 3: Cross multiply
    389,382,321.88x = 537,346,763.22 × 213,168,889
  4. Step 4: Simplify right side
    389,382,321.88x = 114,545,612,523,353,472
  5. Step 5: Solve for x
    x = 114,545,612,523,353,472/389,382,321.88
  6. Step 6: Final answer
    x = 294,172,606.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.