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Finding the Fourth Proportional to 455,020.84, 627,927.54 and 251,073.28

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Solution

The fourth proportional to 455,020.84, 627,927.54 and 251,073.28 is: 346,480.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,020.84 : 627,927.54 = 251,073.28 : x
  2. Step 2: Convert to fraction form
    455,020.84/627,927.54 = 251,073.28/x
  3. Step 3: Cross multiply
    455,020.84x = 627,927.54 × 251,073.28
  4. Step 4: Simplify right side
    455,020.84x = 157,655,827,070.13
  5. Step 5: Solve for x
    x = 157,655,827,070.13/455,020.84
  6. Step 6: Final answer
    x = 346,480.45

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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.