Home / 389,742.38-537,846.10-210,894.38

Finding the Fourth Proportional to 389,742.38, 537,846.10 and 210,894.38

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Solution

The fourth proportional to 389,742.38, 537,846.10 and 210,894.38 is: 291,035.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,742.38 : 537,846.10 = 210,894.38 : x
  2. Step 2: Convert to fraction form
    389,742.38/537,846.10 = 210,894.38/x
  3. Step 3: Cross multiply
    389,742.38x = 537,846.10 × 210,894.38
  4. Step 4: Simplify right side
    389,742.38x = 113,428,716,578.45
  5. Step 5: Solve for x
    x = 113,428,716,578.45/389,742.38
  6. Step 6: Final answer
    x = 291,035.11

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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.