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Finding the Fourth Proportional to 330,552.83, 455,926.59 and 303,415.07

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Solution

The fourth proportional to 330,552.83, 455,926.59 and 303,415.07 is: 418,495.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,552.83 : 455,926.59 = 303,415.07 : x
  2. Step 2: Convert to fraction form
    330,552.83/455,926.59 = 303,415.07/x
  3. Step 3: Cross multiply
    330,552.83x = 455,926.59 × 303,415.07
  4. Step 4: Simplify right side
    330,552.83x = 138,334,995,940.08
  5. Step 5: Solve for x
    x = 138,334,995,940.08/330,552.83
  6. Step 6: Final answer
    x = 418,495.87

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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.