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Finding the Fourth Proportional to 248,213.59, 372,061.15 and 121,678.63

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Solution

The fourth proportional to 248,213.59, 372,061.15 and 121,678.63 is: 182,390.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,213.59 : 372,061.15 = 121,678.63 : x
  2. Step 2: Convert to fraction form
    248,213.59/372,061.15 = 121,678.63/x
  3. Step 3: Cross multiply
    248,213.59x = 372,061.15 × 121,678.63
  4. Step 4: Simplify right side
    248,213.59x = 45,271,891,008.22
  5. Step 5: Solve for x
    x = 45,271,891,008.22/248,213.59
  6. Step 6: Final answer
    x = 182,390.86

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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.