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Finding the Fourth Proportional to 354,812.50, 489,661.23 and 203,919.22

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Solution

The fourth proportional to 354,812.50, 489,661.23 and 203,919.22 is: 281,420.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,812.50 : 489,661.23 = 203,919.22 : x
  2. Step 2: Convert to fraction form
    354,812.50/489,661.23 = 203,919.22/x
  3. Step 3: Cross multiply
    354,812.50x = 489,661.23 × 203,919.22
  4. Step 4: Simplify right side
    354,812.50x = 99,851,336,085.84
  5. Step 5: Solve for x
    x = 99,851,336,085.84/354,812.50
  6. Step 6: Final answer
    x = 281,420.01

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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.