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Finding the Fourth Proportional to 418,355.84, 577,334.88 and 227,369.72

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Solution

The fourth proportional to 418,355.84, 577,334.88 and 227,369.72 is: 313,772.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,355.84 : 577,334.88 = 227,369.72 : x
  2. Step 2: Convert to fraction form
    418,355.84/577,334.88 = 227,369.72/x
  3. Step 3: Cross multiply
    418,355.84x = 577,334.88 × 227,369.72
  4. Step 4: Simplify right side
    418,355.84x = 131,268,470,011.83
  5. Step 5: Solve for x
    x = 131,268,470,011.83/418,355.84
  6. Step 6: Final answer
    x = 313,772.29

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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.