Home / 280,834.74-421,418.57-103,466.21

Finding the Fourth Proportional to 280,834.74, 421,418.57 and 103,466.21

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Solution

The fourth proportional to 280,834.74, 421,418.57 and 103,466.21 is: 155,260.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,834.74 : 421,418.57 = 103,466.21 : x
  2. Step 2: Convert to fraction form
    280,834.74/421,418.57 = 103,466.21/x
  3. Step 3: Cross multiply
    280,834.74x = 421,418.57 × 103,466.21
  4. Step 4: Simplify right side
    280,834.74x = 43,602,579,637.10
  5. Step 5: Solve for x
    x = 43,602,579,637.10/280,834.74
  6. Step 6: Final answer
    x = 155,260.63

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1.5x scale

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.