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Finding the Fourth Proportional to 421,703.01, 581,959.49 and 230,716.35

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Solution

The fourth proportional to 421,703.01, 581,959.49 and 230,716.35 is: 318,393.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,703.01 : 581,959.49 = 230,716.35 : x
  2. Step 2: Convert to fraction form
    421,703.01/581,959.49 = 230,716.35/x
  3. Step 3: Cross multiply
    421,703.01x = 581,959.49 × 230,716.35
  4. Step 4: Simplify right side
    421,703.01x = 134,267,568,227.08
  5. Step 5: Solve for x
    x = 134,267,568,227.08/421,703.01
  6. Step 6: Final answer
    x = 318,393.67

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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.