Home / 400,823.54-553,145.40-228,738.05

Finding the Fourth Proportional to 400,823.54, 553,145.40 and 228,738.05

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Solution

The fourth proportional to 400,823.54, 553,145.40 and 228,738.05 is: 315,663.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,823.54 : 553,145.40 = 228,738.05 : x
  2. Step 2: Convert to fraction form
    400,823.54/553,145.40 = 228,738.05/x
  3. Step 3: Cross multiply
    400,823.54x = 553,145.40 × 228,738.05
  4. Step 4: Simplify right side
    400,823.54x = 126,525,400,162.47
  5. Step 5: Solve for x
    x = 126,525,400,162.47/400,823.54
  6. Step 6: Final answer
    x = 315,663.60

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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.