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Finding the Fourth Proportional to 418,215.99, 577,143.32 and 227,232.57

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Solution

The fourth proportional to 418,215.99, 577,143.32 and 227,232.57 is: 313,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,215.99 : 577,143.32 = 227,232.57 : x
  2. Step 2: Convert to fraction form
    418,215.99/577,143.32 = 227,232.57/x
  3. Step 3: Cross multiply
    418,215.99x = 577,143.32 × 227,232.57
  4. Step 4: Simplify right side
    418,215.99x = 131,145,758,725.77
  5. Step 5: Solve for x
    x = 131,145,758,725.77/418,215.99
  6. Step 6: Final answer
    x = 313,583.80

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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.