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Finding the Fourth Proportional to 421,696.55, 581,883.86 and 251,894.63

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Solution

The fourth proportional to 421,696.55, 581,883.86 and 251,894.63 is: 347,580.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,696.55 : 581,883.86 = 251,894.63 : x
  2. Step 2: Convert to fraction form
    421,696.55/581,883.86 = 251,894.63/x
  3. Step 3: Cross multiply
    421,696.55x = 581,883.86 × 251,894.63
  4. Step 4: Simplify right side
    421,696.55x = 146,573,415,448.78
  5. Step 5: Solve for x
    x = 146,573,415,448.78/421,696.55
  6. Step 6: Final answer
    x = 347,580.31

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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.