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Finding the Fourth Proportional to 478,234.33, 659,955.40 and 263,394.38

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Solution

The fourth proportional to 478,234.33, 659,955.40 and 263,394.38 is: 363,479.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,234.33 : 659,955.40 = 263,394.38 : x
  2. Step 2: Convert to fraction form
    478,234.33/659,955.40 = 263,394.38/x
  3. Step 3: Cross multiply
    478,234.33x = 659,955.40 × 263,394.38
  4. Step 4: Simplify right side
    478,234.33x = 173,828,544,402.06
  5. Step 5: Solve for x
    x = 173,828,544,402.06/478,234.33
  6. Step 6: Final answer
    x = 363,479.86

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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.