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Finding the Fourth Proportional to 455,061.79, 627,984.79 and 251,112.66

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Solution

The fourth proportional to 455,061.79, 627,984.79 and 251,112.66 is: 346,535.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,061.79 : 627,984.79 = 251,112.66 : x
  2. Step 2: Convert to fraction form
    455,061.79/627,984.79 = 251,112.66/x
  3. Step 3: Cross multiply
    455,061.79x = 627,984.79 × 251,112.66
  4. Step 4: Simplify right side
    455,061.79x = 157,694,931,056.44
  5. Step 5: Solve for x
    x = 157,694,931,056.44/455,061.79
  6. Step 6: Final answer
    x = 346,535.21

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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.