Home / 221,839.50-306,031.47-145,325.22

Finding the Fourth Proportional to 221,839.50, 306,031.47 and 145,325.22

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Solution

The fourth proportional to 221,839.50, 306,031.47 and 145,325.22 is: 200,478.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,839.50 : 306,031.47 = 145,325.22 : x
  2. Step 2: Convert to fraction form
    221,839.50/306,031.47 = 145,325.22/x
  3. Step 3: Cross multiply
    221,839.50x = 306,031.47 × 145,325.22
  4. Step 4: Simplify right side
    221,839.50x = 44,474,090,704.67
  5. Step 5: Solve for x
    x = 44,474,090,704.67/221,839.50
  6. Step 6: Final answer
    x = 200,478.68

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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.