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Finding the Fourth Proportional to 455,342.33, 628,369.01 and 251,393.21

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Solution

The fourth proportional to 455,342.33, 628,369.01 and 251,393.21 is: 346,920.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,342.33 : 628,369.01 = 251,393.21 : x
  2. Step 2: Convert to fraction form
    455,342.33/628,369.01 = 251,393.21/x
  3. Step 3: Cross multiply
    455,342.33x = 628,369.01 × 251,393.21
  4. Step 4: Simplify right side
    455,342.33x = 157,967,698,089.61
  5. Step 5: Solve for x
    x = 157,967,698,089.61/455,342.33
  6. Step 6: Final answer
    x = 346,920.74

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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.