Home / 280,629.96-421,111.01-103,261.52

Finding the Fourth Proportional to 280,629.96, 421,111.01 and 103,261.52

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Solution

The fourth proportional to 280,629.96, 421,111.01 and 103,261.52 is: 154,953.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,629.96 : 421,111.01 = 103,261.52 : x
  2. Step 2: Convert to fraction form
    280,629.96/421,111.01 = 103,261.52/x
  3. Step 3: Cross multiply
    280,629.96x = 421,111.01 × 103,261.52
  4. Step 4: Simplify right side
    280,629.96x = 43,484,562,981.34
  5. Step 5: Solve for x
    x = 43,484,562,981.34/280,629.96
  6. Step 6: Final answer
    x = 154,953.39

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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.