Home / 389,107.20-537,235.20-293,721.60

Finding the Fourth Proportional to 389,107.20, 537,235.20 and 293,721.60

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Solution

The fourth proportional to 389,107.20, 537,235.20 and 293,721.60 is: 405,537.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,107.20 : 537,235.20 = 293,721.60 : x
  2. Step 2: Convert to fraction form
    389,107.20/537,235.20 = 293,721.60/x
  3. Step 3: Cross multiply
    389,107.20x = 537,235.20 × 293,721.60
  4. Step 4: Simplify right side
    389,107.20x = 157,797,582,520.32
  5. Step 5: Solve for x
    x = 157,797,582,520.32/389,107.20
  6. Step 6: Final answer
    x = 405,537.55

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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.