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Finding the Fourth Proportional to 328,742.12, 453,663.18 and 177,839

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Solution

The fourth proportional to 328,742.12, 453,663.18 and 177,839 is: 245,417.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,742.12 : 453,663.18 = 177,839 : x
  2. Step 2: Convert to fraction form
    328,742.12/453,663.18 = 177,839/x
  3. Step 3: Cross multiply
    328,742.12x = 453,663.18 × 177,839
  4. Step 4: Simplify right side
    328,742.12x = 80,679,006,268.02
  5. Step 5: Solve for x
    x = 80,679,006,268.02/328,742.12
  6. Step 6: Final answer
    x = 245,417.31

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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.