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Finding the Fourth Proportional to 418,143.94, 577,039.32 and 227,157.49

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Solution

The fourth proportional to 418,143.94, 577,039.32 and 227,157.49 is: 313,477.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,143.94 : 577,039.32 = 227,157.49 : x
  2. Step 2: Convert to fraction form
    418,143.94/577,039.32 = 227,157.49/x
  3. Step 3: Cross multiply
    418,143.94x = 577,039.32 × 227,157.49
  4. Step 4: Simplify right side
    418,143.94x = 131,078,803,562.51
  5. Step 5: Solve for x
    x = 131,078,803,562.51/418,143.94
  6. Step 6: Final answer
    x = 313,477.71

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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.