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Finding the Fourth Proportional to 496,279.80, 745,110.90 and 309,655.80

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Solution

The fourth proportional to 496,279.80, 745,110.90 and 309,655.80 is: 464,914.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,279.80 : 745,110.90 = 309,655.80 : x
  2. Step 2: Convert to fraction form
    496,279.80/745,110.90 = 309,655.80/x
  3. Step 3: Cross multiply
    496,279.80x = 745,110.90 × 309,655.80
  4. Step 4: Simplify right side
    496,279.80x = 230,727,911,828.22
  5. Step 5: Solve for x
    x = 230,727,911,828.22/496,279.80
  6. Step 6: Final answer
    x = 464,914.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.