Home / 291,919.20-402,848.49-157,783.20

Finding the Fourth Proportional to 291,919.20, 402,848.49 and 157,783.20

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Solution

The fourth proportional to 291,919.20, 402,848.49 and 157,783.20 is: 217,740.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,919.20 : 402,848.49 = 157,783.20 : x
  2. Step 2: Convert to fraction form
    291,919.20/402,848.49 = 157,783.20/x
  3. Step 3: Cross multiply
    291,919.20x = 402,848.49 × 157,783.20
  4. Step 4: Simplify right side
    291,919.20x = 63,562,723,867.37
  5. Step 5: Solve for x
    x = 63,562,723,867.37/291,919.20
  6. Step 6: Final answer
    x = 217,740.81

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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.