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Finding the Fourth Proportional to 455,326.38, 628,350.57 and 251,377.47

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Solution

The fourth proportional to 455,326.38, 628,350.57 and 251,377.47 is: 346,901.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,326.38 : 628,350.57 = 251,377.47 : x
  2. Step 2: Convert to fraction form
    455,326.38/628,350.57 = 251,377.47/x
  3. Step 3: Cross multiply
    455,326.38x = 628,350.57 × 251,377.47
  4. Step 4: Simplify right side
    455,326.38x = 157,953,176,559.66
  5. Step 5: Solve for x
    x = 157,953,176,559.66/455,326.38
  6. Step 6: Final answer
    x = 346,901.00

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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.