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Finding the Fourth Proportional to 259,315.60, 388,195.80 and 154,080.40

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Solution

The fourth proportional to 259,315.60, 388,195.80 and 154,080.40 is: 230,658.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,315.60 : 388,195.80 = 154,080.40 : x
  2. Step 2: Convert to fraction form
    259,315.60/388,195.80 = 154,080.40/x
  3. Step 3: Cross multiply
    259,315.60x = 388,195.80 × 154,080.40
  4. Step 4: Simplify right side
    259,315.60x = 59,813,364,142.32
  5. Step 5: Solve for x
    x = 59,813,364,142.32/259,315.60
  6. Step 6: Final answer
    x = 230,658.56

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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.