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Finding the Fourth Proportional to 391,708.25, 540,722.73 and 264,556.07

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Solution

The fourth proportional to 391,708.25, 540,722.73 and 264,556.07 is: 365,199.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,708.25 : 540,722.73 = 264,556.07 : x
  2. Step 2: Convert to fraction form
    391,708.25/540,722.73 = 264,556.07/x
  3. Step 3: Cross multiply
    391,708.25x = 540,722.73 × 264,556.07
  4. Step 4: Simplify right side
    391,708.25x = 143,051,480,408.47
  5. Step 5: Solve for x
    x = 143,051,480,408.47/391,708.25
  6. Step 6: Final answer
    x = 365,199.05

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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.