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Finding the Fourth Proportional to 328,685.44, 453,862.40 and 208,039.56

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Solution

The fourth proportional to 328,685.44, 453,862.40 and 208,039.56 is: 287,269.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,685.44 : 453,862.40 = 208,039.56 : x
  2. Step 2: Convert to fraction form
    328,685.44/453,862.40 = 208,039.56/x
  3. Step 3: Cross multiply
    328,685.44x = 453,862.40 × 208,039.56
  4. Step 4: Simplify right side
    328,685.44x = 94,421,333,996.54
  5. Step 5: Solve for x
    x = 94,421,333,996.54/328,685.44
  6. Step 6: Final answer
    x = 287,269.60

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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.