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Finding the Fourth Proportional to 469,866.15, 648,415.26 and 255,006.21

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Solution

The fourth proportional to 469,866.15, 648,415.26 and 255,006.21 is: 351,908.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,866.15 : 648,415.26 = 255,006.21 : x
  2. Step 2: Convert to fraction form
    469,866.15/648,415.26 = 255,006.21/x
  3. Step 3: Cross multiply
    469,866.15x = 648,415.26 × 255,006.21
  4. Step 4: Simplify right side
    469,866.15x = 165,349,917,958.77
  5. Step 5: Solve for x
    x = 165,349,917,958.77/469,866.15
  6. Step 6: Final answer
    x = 351,908.56

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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.