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Finding the Fourth Proportional to 453,379.68, 625,653.72 and 310,134.42

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Solution

The fourth proportional to 453,379.68, 625,653.72 and 310,134.42 is: 427,978.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,379.68 : 625,653.72 = 310,134.42 : x
  2. Step 2: Convert to fraction form
    453,379.68/625,653.72 = 310,134.42/x
  3. Step 3: Cross multiply
    453,379.68x = 625,653.72 × 310,134.42
  4. Step 4: Simplify right side
    453,379.68x = 194,036,753,573.04
  5. Step 5: Solve for x
    x = 194,036,753,573.04/453,379.68
  6. Step 6: Final answer
    x = 427,978.50

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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.