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Finding the Fourth Proportional to 455,094.65, 628,070.86 and 251,189.71

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Solution

The fourth proportional to 455,094.65, 628,070.86 and 251,189.71 is: 346,664.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,094.65 : 628,070.86 = 251,189.71 : x
  2. Step 2: Convert to fraction form
    455,094.65/628,070.86 = 251,189.71/x
  3. Step 3: Cross multiply
    455,094.65x = 628,070.86 × 251,189.71
  4. Step 4: Simplify right side
    455,094.65x = 157,764,935,926.66
  5. Step 5: Solve for x
    x = 157,764,935,926.66/455,094.65
  6. Step 6: Final answer
    x = 346,664.01

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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.