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Finding the Fourth Proportional to 421,040.52, 581,423.94 and 270,399.96

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Solution

The fourth proportional to 421,040.52, 581,423.94 and 270,399.96 is: 373,401.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,040.52 : 581,423.94 = 270,399.96 : x
  2. Step 2: Convert to fraction form
    421,040.52/581,423.94 = 270,399.96/x
  3. Step 3: Cross multiply
    421,040.52x = 581,423.94 × 270,399.96
  4. Step 4: Simplify right side
    421,040.52x = 157,217,010,119.04
  5. Step 5: Solve for x
    x = 157,217,010,119.04/421,040.52
  6. Step 6: Final answer
    x = 373,401.14

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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.