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Finding the Fourth Proportional to 248,718.68, 342,444.80 and 225,989.64

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Solution

The fourth proportional to 248,718.68, 342,444.80 and 225,989.64 is: 311,150.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,718.68 : 342,444.80 = 225,989.64 : x
  2. Step 2: Convert to fraction form
    248,718.68/342,444.80 = 225,989.64/x
  3. Step 3: Cross multiply
    248,718.68x = 342,444.80 × 225,989.64
  4. Step 4: Simplify right side
    248,718.68x = 77,388,977,071.87
  5. Step 5: Solve for x
    x = 77,388,977,071.87/248,718.68
  6. Step 6: Final answer
    x = 311,150.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.