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Finding the Fourth Proportional to 328,655.36, 453,821 and 208,009.52

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Solution

The fourth proportional to 328,655.36, 453,821 and 208,009.52 is: 287,228.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,655.36 : 453,821 = 208,009.52 : x
  2. Step 2: Convert to fraction form
    328,655.36/453,821 = 208,009.52/x
  3. Step 3: Cross multiply
    328,655.36x = 453,821 × 208,009.52
  4. Step 4: Simplify right side
    328,655.36x = 94,399,088,375.92
  5. Step 5: Solve for x
    x = 94,399,088,375.92/328,655.36
  6. Step 6: Final answer
    x = 287,228.20

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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.