Home / 400,815.86-553,120.30-228,788.37

Finding the Fourth Proportional to 400,815.86, 553,120.30 and 228,788.37

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Solution

The fourth proportional to 400,815.86, 553,120.30 and 228,788.37 is: 315,724.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,815.86 : 553,120.30 = 228,788.37 : x
  2. Step 2: Convert to fraction form
    400,815.86/553,120.30 = 228,788.37/x
  3. Step 3: Cross multiply
    400,815.86x = 553,120.30 × 228,788.37
  4. Step 4: Simplify right side
    400,815.86x = 126,547,492,405.61
  5. Step 5: Solve for x
    x = 126,547,492,405.61/400,815.86
  6. Step 6: Final answer
    x = 315,724.77

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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.