Home / 210,261.35-315,270.83-143,782.02

Finding the Fourth Proportional to 210,261.35, 315,270.83 and 143,782.02

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Solution

The fourth proportional to 210,261.35, 315,270.83 and 143,782.02 is: 215,590.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,261.35 : 315,270.83 = 143,782.02 : x
  2. Step 2: Convert to fraction form
    210,261.35/315,270.83 = 143,782.02/x
  3. Step 3: Cross multiply
    210,261.35x = 315,270.83 × 143,782.02
  4. Step 4: Simplify right side
    210,261.35x = 45,330,277,143.93
  5. Step 5: Solve for x
    x = 45,330,277,143.93/210,261.35
  6. Step 6: Final answer
    x = 215,590.15

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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.