Home / 389,363.25-537,321.29-210,515.25

Finding the Fourth Proportional to 389,363.25, 537,321.29 and 210,515.25

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Solution

The fourth proportional to 389,363.25, 537,321.29 and 210,515.25 is: 290,511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,363.25 : 537,321.29 = 210,515.25 : x
  2. Step 2: Convert to fraction form
    389,363.25/537,321.29 = 210,515.25/x
  3. Step 3: Cross multiply
    389,363.25x = 537,321.29 × 210,515.25
  4. Step 4: Simplify right side
    389,363.25x = 113,114,324,642.10
  5. Step 5: Solve for x
    x = 113,114,324,642.10/389,363.25
  6. Step 6: Final answer
    x = 290,511.05

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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.