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Finding the Fourth Proportional to 225,783.54, 311,590.85 and 129,003.32

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Solution

The fourth proportional to 225,783.54, 311,590.85 and 129,003.32 is: 178,030.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,783.54 : 311,590.85 = 129,003.32 : x
  2. Step 2: Convert to fraction form
    225,783.54/311,590.85 = 129,003.32/x
  3. Step 3: Cross multiply
    225,783.54x = 311,590.85 × 129,003.32
  4. Step 4: Simplify right side
    225,783.54x = 40,196,254,265.58
  5. Step 5: Solve for x
    x = 40,196,254,265.58/225,783.54
  6. Step 6: Final answer
    x = 178,030.05

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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.