Home / 228,623.20-315,496.56-128,024.80

Finding the Fourth Proportional to 228,623.20, 315,496.56 and 128,024.80

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Solution

The fourth proportional to 228,623.20, 315,496.56 and 128,024.80 is: 176,672.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,623.20 : 315,496.56 = 128,024.80 : x
  2. Step 2: Convert to fraction form
    228,623.20/315,496.56 = 128,024.80/x
  3. Step 3: Cross multiply
    228,623.20x = 315,496.56 × 128,024.80
  4. Step 4: Simplify right side
    228,623.20x = 40,391,383,994.69
  5. Step 5: Solve for x
    x = 40,391,383,994.69/228,623.20
  6. Step 6: Final answer
    x = 176,672.29

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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.