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Finding the Fourth Proportional to 454,955.45, 682,706.55 and 188,688.20

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Solution

The fourth proportional to 454,955.45, 682,706.55 and 188,688.20 is: 283,145.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,955.45 : 682,706.55 = 188,688.20 : x
  2. Step 2: Convert to fraction form
    454,955.45/682,706.55 = 188,688.20/x
  3. Step 3: Cross multiply
    454,955.45x = 682,706.55 × 188,688.20
  4. Step 4: Simplify right side
    454,955.45x = 128,818,670,047.71
  5. Step 5: Solve for x
    x = 128,818,670,047.71/454,955.45
  6. Step 6: Final answer
    x = 283,145.68

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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.