Home / 389,030.27-536,876.79-219,260.75

Finding the Fourth Proportional to 389,030.27, 536,876.79 and 219,260.75

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Solution

The fourth proportional to 389,030.27, 536,876.79 and 219,260.75 is: 302,588.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,030.27 : 536,876.79 = 219,260.75 : x
  2. Step 2: Convert to fraction form
    389,030.27/536,876.79 = 219,260.75/x
  3. Step 3: Cross multiply
    389,030.27x = 536,876.79 × 219,260.75
  4. Step 4: Simplify right side
    389,030.27x = 117,716,007,632.99
  5. Step 5: Solve for x
    x = 117,716,007,632.99/389,030.27
  6. Step 6: Final answer
    x = 302,588.30

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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.