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Finding the Fourth Proportional to 469,918.86, 648,488.60 and 255,058.86

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Solution

The fourth proportional to 469,918.86, 648,488.60 and 255,058.86 is: 351,981.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,918.86 : 648,488.60 = 255,058.86 : x
  2. Step 2: Convert to fraction form
    469,918.86/648,488.60 = 255,058.86/x
  3. Step 3: Cross multiply
    469,918.86x = 648,488.60 × 255,058.86
  4. Step 4: Simplify right side
    469,918.86x = 165,402,763,039.00
  5. Step 5: Solve for x
    x = 165,402,763,039.00/469,918.86
  6. Step 6: Final answer
    x = 351,981.54

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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.