Home / 389,359.13-537,315.60-210,511.13

Finding the Fourth Proportional to 389,359.13, 537,315.60 and 210,511.13

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Solution

The fourth proportional to 389,359.13, 537,315.60 and 210,511.13 is: 290,505.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,359.13 : 537,315.60 = 210,511.13 : x
  2. Step 2: Convert to fraction form
    389,359.13/537,315.60 = 210,511.13/x
  3. Step 3: Cross multiply
    389,359.13x = 537,315.60 × 210,511.13
  4. Step 4: Simplify right side
    389,359.13x = 113,110,911,436.05
  5. Step 5: Solve for x
    x = 113,110,911,436.05/389,359.13
  6. Step 6: Final answer
    x = 290,505.36

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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.