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Finding the Fourth Proportional to 421,483.22, 581,470.38 and 276,323.84

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Solution

The fourth proportional to 421,483.22, 581,470.38 and 276,323.84 is: 381,211.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,483.22 : 581,470.38 = 276,323.84 : x
  2. Step 2: Convert to fraction form
    421,483.22/581,470.38 = 276,323.84/x
  3. Step 3: Cross multiply
    421,483.22x = 581,470.38 × 276,323.84
  4. Step 4: Simplify right side
    421,483.22x = 160,674,128,247.86
  5. Step 5: Solve for x
    x = 160,674,128,247.86/421,483.22
  6. Step 6: Final answer
    x = 381,211.21

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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.