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Finding the Fourth Proportional to 319,430.88, 479,457.95 and 263,837.34

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Solution

The fourth proportional to 319,430.88, 479,457.95 and 263,837.34 is: 396,013.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,430.88 : 479,457.95 = 263,837.34 : x
  2. Step 2: Convert to fraction form
    319,430.88/479,457.95 = 263,837.34/x
  3. Step 3: Cross multiply
    319,430.88x = 479,457.95 × 263,837.34
  4. Step 4: Simplify right side
    319,430.88x = 126,498,908,850.67
  5. Step 5: Solve for x
    x = 126,498,908,850.67/319,430.88
  6. Step 6: Final answer
    x = 396,013.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.