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Finding the Fourth Proportional to 248,372.80, 372,565.60 and 90,718.72

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Solution

The fourth proportional to 248,372.80, 372,565.60 and 90,718.72 is: 136,080.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,372.80 : 372,565.60 = 90,718.72 : x
  2. Step 2: Convert to fraction form
    248,372.80/372,565.60 = 90,718.72/x
  3. Step 3: Cross multiply
    248,372.80x = 372,565.60 × 90,718.72
  4. Step 4: Simplify right side
    248,372.80x = 33,798,674,348.03
  5. Step 5: Solve for x
    x = 33,798,674,348.03/248,372.80
  6. Step 6: Final answer
    x = 136,080.42

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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.