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Finding the Fourth Proportional to 421,180.54, 581,042.64 and 251,316.52

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Solution

The fourth proportional to 421,180.54, 581,042.64 and 251,316.52 is: 346,705.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,180.54 : 581,042.64 = 251,316.52 : x
  2. Step 2: Convert to fraction form
    421,180.54/581,042.64 = 251,316.52/x
  3. Step 3: Cross multiply
    421,180.54x = 581,042.64 × 251,316.52
  4. Step 4: Simplify right side
    421,180.54x = 146,025,614,256.41
  5. Step 5: Solve for x
    x = 146,025,614,256.41/421,180.54
  6. Step 6: Final answer
    x = 346,705.51

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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.