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Finding the Fourth Proportional to 478,818.36, 660,771.34 and 263,953.71

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Solution

The fourth proportional to 478,818.36, 660,771.34 and 263,953.71 is: 364,257.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,818.36 : 660,771.34 = 263,953.71 : x
  2. Step 2: Convert to fraction form
    478,818.36/660,771.34 = 263,953.71/x
  3. Step 3: Cross multiply
    478,818.36x = 660,771.34 × 263,953.71
  4. Step 4: Simplify right side
    478,818.36x = 174,413,045,994.79
  5. Step 5: Solve for x
    x = 174,413,045,994.79/478,818.36
  6. Step 6: Final answer
    x = 364,257.22

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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.