Home / 210,739.32-315,776.07-171,102.78

Finding the Fourth Proportional to 210,739.32, 315,776.07 and 171,102.78

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Solution

The fourth proportional to 210,739.32, 315,776.07 and 171,102.78 is: 256,383.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,739.32 : 315,776.07 = 171,102.78 : x
  2. Step 2: Convert to fraction form
    210,739.32/315,776.07 = 171,102.78/x
  3. Step 3: Cross multiply
    210,739.32x = 315,776.07 × 171,102.78
  4. Step 4: Simplify right side
    210,739.32x = 54,030,163,434.47
  5. Step 5: Solve for x
    x = 54,030,163,434.47/210,739.32
  6. Step 6: Final answer
    x = 256,383.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.