Home / 280,396.42-387,085.80-173,025.58

Finding the Fourth Proportional to 280,396.42, 387,085.80 and 173,025.58

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Solution

The fourth proportional to 280,396.42, 387,085.80 and 173,025.58 is: 238,860.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,396.42 : 387,085.80 = 173,025.58 : x
  2. Step 2: Convert to fraction form
    280,396.42/387,085.80 = 173,025.58/x
  3. Step 3: Cross multiply
    280,396.42x = 387,085.80 × 173,025.58
  4. Step 4: Simplify right side
    280,396.42x = 66,975,745,054.76
  5. Step 5: Solve for x
    x = 66,975,745,054.76/280,396.42
  6. Step 6: Final answer
    x = 238,860.91

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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.