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Finding the Fourth Proportional to 248,632.40, 372,948.60 and 71,145.20

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Solution

The fourth proportional to 248,632.40, 372,948.60 and 71,145.20 is: 106,717.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,632.40 : 372,948.60 = 71,145.20 : x
  2. Step 2: Convert to fraction form
    248,632.40/372,948.60 = 71,145.20/x
  3. Step 3: Cross multiply
    248,632.40x = 372,948.60 × 71,145.20
  4. Step 4: Simplify right side
    248,632.40x = 26,533,502,736.72
  5. Step 5: Solve for x
    x = 26,533,502,736.72/248,632.40
  6. Step 6: Final answer
    x = 106,717.80

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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.