Home / 281,240.64-421,724.64-103,831.20

Finding the Fourth Proportional to 281,240.64, 421,724.64 and 103,831.20

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Solution

The fourth proportional to 281,240.64, 421,724.64 and 103,831.20 is: 155,696.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,240.64 : 421,724.64 = 103,831.20 : x
  2. Step 2: Convert to fraction form
    281,240.64/421,724.64 = 103,831.20/x
  3. Step 3: Cross multiply
    281,240.64x = 421,724.64 × 103,831.20
  4. Step 4: Simplify right side
    281,240.64x = 43,788,175,440.77
  5. Step 5: Solve for x
    x = 43,788,175,440.77/281,240.64
  6. Step 6: Final answer
    x = 155,696.47

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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.