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Finding the Fourth Proportional to 455,057.58, 627,981.32 and 251,114.47

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Solution

The fourth proportional to 455,057.58, 627,981.32 and 251,114.47 is: 346,538.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,057.58 : 627,981.32 = 251,114.47 : x
  2. Step 2: Convert to fraction form
    455,057.58/627,981.32 = 251,114.47/x
  3. Step 3: Cross multiply
    455,057.58x = 627,981.32 × 251,114.47
  4. Step 4: Simplify right side
    455,057.58x = 157,695,196,341.70
  5. Step 5: Solve for x
    x = 157,695,196,341.70/455,057.58
  6. Step 6: Final answer
    x = 346,538.99

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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.