Home / 389,790.60-537,911.03-210,942.60

Finding the Fourth Proportional to 389,790.60, 537,911.03 and 210,942.60

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Solution

The fourth proportional to 389,790.60, 537,911.03 and 210,942.60 is: 291,100.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,790.60 : 537,911.03 = 210,942.60 : x
  2. Step 2: Convert to fraction form
    389,790.60/537,911.03 = 210,942.60/x
  3. Step 3: Cross multiply
    389,790.60x = 537,911.03 × 210,942.60
  4. Step 4: Simplify right side
    389,790.60x = 113,468,352,581.66
  5. Step 5: Solve for x
    x = 113,468,352,581.66/389,790.60
  6. Step 6: Final answer
    x = 291,100.79

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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.