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Finding the Fourth Proportional to 391,711.99, 540,727.92 and 264,559.81

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Solution

The fourth proportional to 391,711.99, 540,727.92 and 264,559.81 is: 365,204.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,711.99 : 540,727.92 = 264,559.81 : x
  2. Step 2: Convert to fraction form
    391,711.99/540,727.92 = 264,559.81/x
  3. Step 3: Cross multiply
    391,711.99x = 540,727.92 × 264,559.81
  4. Step 4: Simplify right side
    391,711.99x = 143,054,875,776.90
  5. Step 5: Solve for x
    x = 143,054,875,776.90/391,711.99
  6. Step 6: Final answer
    x = 365,204.23

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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.