Home / 354,719.53-531,127.95-221,334.40

Finding the Fourth Proportional to 354,719.53, 531,127.95 and 221,334.40

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Solution

The fourth proportional to 354,719.53, 531,127.95 and 221,334.40 is: 331,407.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,719.53 : 531,127.95 = 221,334.40 : x
  2. Step 2: Convert to fraction form
    354,719.53/531,127.95 = 221,334.40/x
  3. Step 3: Cross multiply
    354,719.53x = 531,127.95 × 221,334.40
  4. Step 4: Simplify right side
    354,719.53x = 117,556,886,136.48
  5. Step 5: Solve for x
    x = 117,556,886,136.48/354,719.53
  6. Step 6: Final answer
    x = 331,407.99

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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.