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Finding the Fourth Proportional to 421,102.59, 581,180.84 and 268,091.90

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Solution

The fourth proportional to 421,102.59, 581,180.84 and 268,091.90 is: 370,004.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,102.59 : 581,180.84 = 268,091.90 : x
  2. Step 2: Convert to fraction form
    421,102.59/581,180.84 = 268,091.90/x
  3. Step 3: Cross multiply
    421,102.59x = 581,180.84 × 268,091.90
  4. Step 4: Simplify right side
    421,102.59x = 155,809,875,639.20
  5. Step 5: Solve for x
    x = 155,809,875,639.20/421,102.59
  6. Step 6: Final answer
    x = 370,004.55

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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.