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Finding the Fourth Proportional to 455,333.38, 628,360.23 and 251,384.47

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Solution

The fourth proportional to 455,333.38, 628,360.23 and 251,384.47 is: 346,910.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,333.38 : 628,360.23 = 251,384.47 : x
  2. Step 2: Convert to fraction form
    455,333.38/628,360.23 = 251,384.47/x
  3. Step 3: Cross multiply
    455,333.38x = 628,360.23 × 251,384.47
  4. Step 4: Simplify right side
    455,333.38x = 157,960,003,387.63
  5. Step 5: Solve for x
    x = 157,960,003,387.63/455,333.38
  6. Step 6: Final answer
    x = 346,910.66

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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.