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Finding the Fourth Proportional to 455,009.32, 627,884.49 and 251,061.85

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Solution

The fourth proportional to 455,009.32, 627,884.49 and 251,061.85 is: 346,449.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,009.32 : 627,884.49 = 251,061.85 : x
  2. Step 2: Convert to fraction form
    455,009.32/627,884.49 = 251,061.85/x
  3. Step 3: Cross multiply
    455,009.32x = 627,884.49 × 251,061.85
  4. Step 4: Simplify right side
    455,009.32x = 157,637,841,645.71
  5. Step 5: Solve for x
    x = 157,637,841,645.71/455,009.32
  6. Step 6: Final answer
    x = 346,449.70

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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.