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Finding the Fourth Proportional to 406,226.88, 560,655 and 253,290

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Solution

The fourth proportional to 406,226.88, 560,655 and 253,290 is: 349,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,226.88 : 560,655 = 253,290 : x
  2. Step 2: Convert to fraction form
    406,226.88/560,655 = 253,290/x
  3. Step 3: Cross multiply
    406,226.88x = 560,655 × 253,290
  4. Step 4: Simplify right side
    406,226.88x = 142,008,304,950
  5. Step 5: Solve for x
    x = 142,008,304,950/406,226.88
  6. Step 6: Final answer
    x = 349,578.80

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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.