Home / 280,626.90-387,375.93-173,240.34

Finding the Fourth Proportional to 280,626.90, 387,375.93 and 173,240.34

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Solution

The fourth proportional to 280,626.90, 387,375.93 and 173,240.34 is: 239,140.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,626.90 : 387,375.93 = 173,240.34 : x
  2. Step 2: Convert to fraction form
    280,626.90/387,375.93 = 173,240.34/x
  3. Step 3: Cross multiply
    280,626.90x = 387,375.93 × 173,240.34
  4. Step 4: Simplify right side
    280,626.90x = 67,109,137,821.02
  5. Step 5: Solve for x
    x = 67,109,137,821.02/280,626.90
  6. Step 6: Final answer
    x = 239,140.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.