Home / 281,300.10-421,904.67-103,890.66

Finding the Fourth Proportional to 281,300.10, 421,904.67 and 103,890.66

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Solution

The fourth proportional to 281,300.10, 421,904.67 and 103,890.66 is: 155,819.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,300.10 : 421,904.67 = 103,890.66 : x
  2. Step 2: Convert to fraction form
    281,300.10/421,904.67 = 103,890.66/x
  3. Step 3: Cross multiply
    281,300.10x = 421,904.67 × 103,890.66
  4. Step 4: Simplify right side
    281,300.10x = 43,831,954,623.38
  5. Step 5: Solve for x
    x = 43,831,954,623.38/281,300.10
  6. Step 6: Final answer
    x = 155,819.19

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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.