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Finding the Fourth Proportional to 469,930.29, 648,486.34 and 255,065.73

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Solution

The fourth proportional to 469,930.29, 648,486.34 and 255,065.73 is: 351,981.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,930.29 : 648,486.34 = 255,065.73 : x
  2. Step 2: Convert to fraction form
    469,930.29/648,486.34 = 255,065.73/x
  3. Step 3: Cross multiply
    469,930.29x = 648,486.34 × 255,065.73
  4. Step 4: Simplify right side
    469,930.29x = 165,406,641,707.13
  5. Step 5: Solve for x
    x = 165,406,641,707.13/469,930.29
  6. Step 6: Final answer
    x = 351,981.23

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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.