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Finding the Fourth Proportional to 455,762.84, 628,959.30 and 251,818.48

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Solution

The fourth proportional to 455,762.84, 628,959.30 and 251,818.48 is: 347,513.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,762.84 : 628,959.30 = 251,818.48 : x
  2. Step 2: Convert to fraction form
    455,762.84/628,959.30 = 251,818.48/x
  3. Step 3: Cross multiply
    455,762.84x = 628,959.30 × 251,818.48
  4. Step 4: Simplify right side
    455,762.84x = 158,383,571,763.07
  5. Step 5: Solve for x
    x = 158,383,571,763.07/455,762.84
  6. Step 6: Final answer
    x = 347,513.13

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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.