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Finding the Fourth Proportional to 328,878.51, 453,612.72 and 251,528.86

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Solution

The fourth proportional to 328,878.51, 453,612.72 and 251,528.86 is: 346,926.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,878.51 : 453,612.72 = 251,528.86 : x
  2. Step 2: Convert to fraction form
    328,878.51/453,612.72 = 251,528.86/x
  3. Step 3: Cross multiply
    328,878.51x = 453,612.72 × 251,528.86
  4. Step 4: Simplify right side
    328,878.51x = 114,096,690,343.10
  5. Step 5: Solve for x
    x = 114,096,690,343.10/328,878.51
  6. Step 6: Final answer
    x = 346,926.56

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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.