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Finding the Fourth Proportional to 355,567.95, 491,079.86 and 328,663.76

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Solution

The fourth proportional to 355,567.95, 491,079.86 and 328,663.76 is: 453,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,567.95 : 491,079.86 = 328,663.76 : x
  2. Step 2: Convert to fraction form
    355,567.95/491,079.86 = 328,663.76/x
  3. Step 3: Cross multiply
    355,567.95x = 491,079.86 × 328,663.76
  4. Step 4: Simplify right side
    355,567.95x = 161,400,149,149.16
  5. Step 5: Solve for x
    x = 161,400,149,149.16/355,567.95
  6. Step 6: Final answer
    x = 453,922.10

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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.