Home / 455,275.12-628,314.42-251,365.30

Finding the Fourth Proportional to 455,275.12, 628,314.42 and 251,365.30

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Solution

The fourth proportional to 455,275.12, 628,314.42 and 251,365.30 is: 346,903.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,275.12 : 628,314.42 = 251,365.30 : x
  2. Step 2: Convert to fraction form
    455,275.12/628,314.42 = 251,365.30/x
  3. Step 3: Cross multiply
    455,275.12x = 628,314.42 × 251,365.30
  4. Step 4: Simplify right side
    455,275.12x = 157,936,442,677.63
  5. Step 5: Solve for x
    x = 157,936,442,677.63/455,275.12
  6. Step 6: Final answer
    x = 346,903.30

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1.5x scale

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.