Home / 228,786.48-315,724.44-128,184.24

Finding the Fourth Proportional to 228,786.48, 315,724.44 and 128,184.24

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Solution

The fourth proportional to 228,786.48, 315,724.44 and 128,184.24 is: 176,893.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,786.48 : 315,724.44 = 128,184.24 : x
  2. Step 2: Convert to fraction form
    228,786.48/315,724.44 = 128,184.24/x
  3. Step 3: Cross multiply
    228,786.48x = 315,724.44 × 128,184.24
  4. Step 4: Simplify right side
    228,786.48x = 40,470,897,390.83
  5. Step 5: Solve for x
    x = 40,470,897,390.83/228,786.48
  6. Step 6: Final answer
    x = 176,893.75

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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.