Home / 281,583.40-421,325.32-278,434.12

Finding the Fourth Proportional to 281,583.40, 421,325.32 and 278,434.12

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Solution

The fourth proportional to 281,583.40, 421,325.32 and 278,434.12 is: 416,613.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,583.40 : 421,325.32 = 278,434.12 : x
  2. Step 2: Convert to fraction form
    281,583.40/421,325.32 = 278,434.12/x
  3. Step 3: Cross multiply
    281,583.40x = 421,325.32 × 278,434.12
  4. Step 4: Simplify right side
    281,583.40x = 117,311,344,707.92
  5. Step 5: Solve for x
    x = 117,311,344,707.92/281,583.40
  6. Step 6: Final answer
    x = 416,613.14

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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.