Home / 389,837.38-537,975.52-210,989.38

Finding the Fourth Proportional to 389,837.38, 537,975.52 and 210,989.38

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Solution

The fourth proportional to 389,837.38, 537,975.52 and 210,989.38 is: 291,165.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,837.38 : 537,975.52 = 210,989.38 : x
  2. Step 2: Convert to fraction form
    389,837.38/537,975.52 = 210,989.38/x
  3. Step 3: Cross multiply
    389,837.38x = 537,975.52 × 210,989.38
  4. Step 4: Simplify right side
    389,837.38x = 113,507,121,419.98
  5. Step 5: Solve for x
    x = 113,507,121,419.98/389,837.38
  6. Step 6: Final answer
    x = 291,165.31

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1.5x scale

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.