Home / 455,128.74-628,113.29-251,220.15

Finding the Fourth Proportional to 455,128.74, 628,113.29 and 251,220.15

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Solution

The fourth proportional to 455,128.74, 628,113.29 and 251,220.15 is: 346,703.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,128.74 : 628,113.29 = 251,220.15 : x
  2. Step 2: Convert to fraction form
    455,128.74/628,113.29 = 251,220.15/x
  3. Step 3: Cross multiply
    455,128.74x = 628,113.29 × 251,220.15
  4. Step 4: Simplify right side
    455,128.74x = 157,794,713,674.69
  5. Step 5: Solve for x
    x = 157,794,713,674.69/455,128.74
  6. Step 6: Final answer
    x = 346,703.47

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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.