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Finding the Fourth Proportional to 329,886.83, 455,108.47 and 200,721.75

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Solution

The fourth proportional to 329,886.83, 455,108.47 and 200,721.75 is: 276,913.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,886.83 : 455,108.47 = 200,721.75 : x
  2. Step 2: Convert to fraction form
    329,886.83/455,108.47 = 200,721.75/x
  3. Step 3: Cross multiply
    329,886.83x = 455,108.47 × 200,721.75
  4. Step 4: Simplify right side
    329,886.83x = 91,350,167,458.82
  5. Step 5: Solve for x
    x = 91,350,167,458.82/329,886.83
  6. Step 6: Final answer
    x = 276,913.66

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1.5x scale

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.