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Finding the Fourth Proportional to 248,771.40, 372,746.70 and 143,406.60

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Solution

The fourth proportional to 248,771.40, 372,746.70 and 143,406.60 is: 214,873.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,771.40 : 372,746.70 = 143,406.60 : x
  2. Step 2: Convert to fraction form
    248,771.40/372,746.70 = 143,406.60/x
  3. Step 3: Cross multiply
    248,771.40x = 372,746.70 × 143,406.60
  4. Step 4: Simplify right side
    248,771.40x = 53,454,336,908.22
  5. Step 5: Solve for x
    x = 53,454,336,908.22/248,771.40
  6. Step 6: Final answer
    x = 214,873.32

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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.