Home / 389,195.64-537,089.07-219,428.55

Finding the Fourth Proportional to 389,195.64, 537,089.07 and 219,428.55

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Solution

The fourth proportional to 389,195.64, 537,089.07 and 219,428.55 is: 302,810.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,195.64 : 537,089.07 = 219,428.55 : x
  2. Step 2: Convert to fraction form
    389,195.64/537,089.07 = 219,428.55/x
  3. Step 3: Cross multiply
    389,195.64x = 537,089.07 × 219,428.55
  4. Step 4: Simplify right side
    389,195.64x = 117,852,675,850.95
  5. Step 5: Solve for x
    x = 117,852,675,850.95/389,195.64
  6. Step 6: Final answer
    x = 302,810.88

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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.