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Finding the Fourth Proportional to 510,480.72, 765,721.08 and 136,494

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Solution

The fourth proportional to 510,480.72, 765,721.08 and 136,494 is: 204,741

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,480.72 : 765,721.08 = 136,494 : x
  2. Step 2: Convert to fraction form
    510,480.72/765,721.08 = 136,494/x
  3. Step 3: Cross multiply
    510,480.72x = 765,721.08 × 136,494
  4. Step 4: Simplify right side
    510,480.72x = 104,516,333,093.52
  5. Step 5: Solve for x
    x = 104,516,333,093.52/510,480.72
  6. Step 6: Final answer
    x = 204,741

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.