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Finding the Fourth Proportional to 259,272.40, 388,908.60 and 111,528.40

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Solution

The fourth proportional to 259,272.40, 388,908.60 and 111,528.40 is: 167,292.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,272.40 : 388,908.60 = 111,528.40 : x
  2. Step 2: Convert to fraction form
    259,272.40/388,908.60 = 111,528.40/x
  3. Step 3: Cross multiply
    259,272.40x = 388,908.60 × 111,528.40
  4. Step 4: Simplify right side
    259,272.40x = 43,374,353,904.24
  5. Step 5: Solve for x
    x = 43,374,353,904.24/259,272.40
  6. Step 6: Final answer
    x = 167,292.60

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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.