Home / 230,238.63-315,428.08-221,609.54

Finding the Fourth Proportional to 230,238.63, 315,428.08 and 221,609.54

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Solution

The fourth proportional to 230,238.63, 315,428.08 and 221,609.54 is: 303,606.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,238.63 : 315,428.08 = 221,609.54 : x
  2. Step 2: Convert to fraction form
    230,238.63/315,428.08 = 221,609.54/x
  3. Step 3: Cross multiply
    230,238.63x = 315,428.08 × 221,609.54
  4. Step 4: Simplify right side
    230,238.63x = 69,901,872,777.47
  5. Step 5: Solve for x
    x = 69,901,872,777.47/230,238.63
  6. Step 6: Final answer
    x = 303,606.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.