Home / 228,738.06-315,658.56-128,136.06

Finding the Fourth Proportional to 228,738.06, 315,658.56 and 128,136.06

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Solution

The fourth proportional to 228,738.06, 315,658.56 and 128,136.06 is: 176,827.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,738.06 : 315,658.56 = 128,136.06 : x
  2. Step 2: Convert to fraction form
    228,738.06/315,658.56 = 128,136.06/x
  3. Step 3: Cross multiply
    228,738.06x = 315,658.56 × 128,136.06
  4. Step 4: Simplify right side
    228,738.06x = 40,447,244,183.67
  5. Step 5: Solve for x
    x = 40,447,244,183.67/228,738.06
  6. Step 6: Final answer
    x = 176,827.78

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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.