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Finding the Fourth Proportional to 308,379.29, 425,327.80 and 265,430.71

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Solution

The fourth proportional to 308,379.29, 425,327.80 and 265,430.71 is: 366,091.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,379.29 : 425,327.80 = 265,430.71 : x
  2. Step 2: Convert to fraction form
    308,379.29/425,327.80 = 265,430.71/x
  3. Step 3: Cross multiply
    308,379.29x = 425,327.80 × 265,430.71
  4. Step 4: Simplify right side
    308,379.29x = 112,895,058,609.58
  5. Step 5: Solve for x
    x = 112,895,058,609.58/308,379.29
  6. Step 6: Final answer
    x = 366,091.57

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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.