Home / 281,343.07-388,253.45-154,018.67

Finding the Fourth Proportional to 281,343.07, 388,253.45 and 154,018.67

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Solution

The fourth proportional to 281,343.07, 388,253.45 and 154,018.67 is: 212,545.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,343.07 : 388,253.45 = 154,018.67 : x
  2. Step 2: Convert to fraction form
    281,343.07/388,253.45 = 154,018.67/x
  3. Step 3: Cross multiply
    281,343.07x = 388,253.45 × 154,018.67
  4. Step 4: Simplify right side
    281,343.07x = 59,798,278,435.69
  5. Step 5: Solve for x
    x = 59,798,278,435.69/281,343.07
  6. Step 6: Final answer
    x = 212,545.77

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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.