Home / 418,143.36-577,040.19-227,157.21

Finding the Fourth Proportional to 418,143.36, 577,040.19 and 227,157.21

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Solution

The fourth proportional to 418,143.36, 577,040.19 and 227,157.21 is: 313,478.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,143.36 : 577,040.19 = 227,157.21 : x
  2. Step 2: Convert to fraction form
    418,143.36/577,040.19 = 227,157.21/x
  3. Step 3: Cross multiply
    418,143.36x = 577,040.19 × 227,157.21
  4. Step 4: Simplify right side
    418,143.36x = 131,078,835,597.28
  5. Step 5: Solve for x
    x = 131,078,835,597.28/418,143.36
  6. Step 6: Final answer
    x = 313,478.22

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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.