Home / 280,721.61-421,145.78-93,728.25

Finding the Fourth Proportional to 280,721.61, 421,145.78 and 93,728.25

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Solution

The fourth proportional to 280,721.61, 421,145.78 and 93,728.25 is: 140,613.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,721.61 : 421,145.78 = 93,728.25 : x
  2. Step 2: Convert to fraction form
    280,721.61/421,145.78 = 93,728.25/x
  3. Step 3: Cross multiply
    280,721.61x = 421,145.78 × 93,728.25
  4. Step 4: Simplify right side
    280,721.61x = 39,473,256,485.64
  5. Step 5: Solve for x
    x = 39,473,256,485.64/280,721.61
  6. Step 6: Final answer
    x = 140,613.53

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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.