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Finding the Fourth Proportional to 295,459.99, 440,379.38 and 278,643.31

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Solution

The fourth proportional to 295,459.99, 440,379.38 and 278,643.31 is: 415,314.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,459.99 : 440,379.38 = 278,643.31 : x
  2. Step 2: Convert to fraction form
    295,459.99/440,379.38 = 278,643.31/x
  3. Step 3: Cross multiply
    295,459.99x = 440,379.38 × 278,643.31
  4. Step 4: Simplify right side
    295,459.99x = 122,708,767,694.61
  5. Step 5: Solve for x
    x = 122,708,767,694.61/295,459.99
  6. Step 6: Final answer
    x = 415,314.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.