Home / 312,309.15-430,986.77-169,069.18

Finding the Fourth Proportional to 312,309.15, 430,986.77 and 169,069.18

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Solution

The fourth proportional to 312,309.15, 430,986.77 and 169,069.18 is: 233,315.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,309.15 : 430,986.77 = 169,069.18 : x
  2. Step 2: Convert to fraction form
    312,309.15/430,986.77 = 169,069.18/x
  3. Step 3: Cross multiply
    312,309.15x = 430,986.77 × 169,069.18
  4. Step 4: Simplify right side
    312,309.15x = 72,866,579,794.75
  5. Step 5: Solve for x
    x = 72,866,579,794.75/312,309.15
  6. Step 6: Final answer
    x = 233,315.55

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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.