Home / 280,933.43-421,203.29-103,417.34

Finding the Fourth Proportional to 280,933.43, 421,203.29 and 103,417.34

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Solution

The fourth proportional to 280,933.43, 421,203.29 and 103,417.34 is: 155,053.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,933.43 : 421,203.29 = 103,417.34 : x
  2. Step 2: Convert to fraction form
    280,933.43/421,203.29 = 103,417.34/x
  3. Step 3: Cross multiply
    280,933.43x = 421,203.29 × 103,417.34
  4. Step 4: Simplify right side
    280,933.43x = 43,559,721,227.95
  5. Step 5: Solve for x
    x = 43,559,721,227.95/280,933.43
  6. Step 6: Final answer
    x = 155,053.54

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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.