Home / 389,107.38-536,969.07-219,341.51

Finding the Fourth Proportional to 389,107.38, 536,969.07 and 219,341.51

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Solution

The fourth proportional to 389,107.38, 536,969.07 and 219,341.51 is: 302,691.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,107.38 : 536,969.07 = 219,341.51 : x
  2. Step 2: Convert to fraction form
    389,107.38/536,969.07 = 219,341.51/x
  3. Step 3: Cross multiply
    389,107.38x = 536,969.07 × 219,341.51
  4. Step 4: Simplify right side
    389,107.38x = 117,779,603,952.25
  5. Step 5: Solve for x
    x = 117,779,603,952.25/389,107.38
  6. Step 6: Final answer
    x = 302,691.78

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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.