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Finding the Fourth Proportional to 328,490.50, 453,316.90 and 177,587.50

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Solution

The fourth proportional to 328,490.50, 453,316.90 and 177,587.50 is: 245,070.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,490.50 : 453,316.90 = 177,587.50 : x
  2. Step 2: Convert to fraction form
    328,490.50/453,316.90 = 177,587.50/x
  3. Step 3: Cross multiply
    328,490.50x = 453,316.90 × 177,587.50
  4. Step 4: Simplify right side
    328,490.50x = 80,503,414,978.75
  5. Step 5: Solve for x
    x = 80,503,414,978.75/328,490.50
  6. Step 6: Final answer
    x = 245,070.76

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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.