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Finding the Fourth Proportional to 421,465.56, 581,833.98 and 325,755.96

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Solution

The fourth proportional to 421,465.56, 581,833.98 and 325,755.96 is: 449,706.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,465.56 : 581,833.98 = 325,755.96 : x
  2. Step 2: Convert to fraction form
    421,465.56/581,833.98 = 325,755.96/x
  3. Step 3: Cross multiply
    421,465.56x = 581,833.98 × 325,755.96
  4. Step 4: Simplify right side
    421,465.56x = 189,535,886,715.52
  5. Step 5: Solve for x
    x = 189,535,886,715.52/421,465.56
  6. Step 6: Final answer
    x = 449,706.70

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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.