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Finding the Fourth Proportional to 479,642.90, 661,889.82 and 264,778.34

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Solution

The fourth proportional to 479,642.90, 661,889.82 and 264,778.34 is: 365,384.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,642.90 : 661,889.82 = 264,778.34 : x
  2. Step 2: Convert to fraction form
    479,642.90/661,889.82 = 264,778.34/x
  3. Step 3: Cross multiply
    479,642.90x = 661,889.82 × 264,778.34
  4. Step 4: Simplify right side
    479,642.90x = 175,254,087,802.50
  5. Step 5: Solve for x
    x = 175,254,087,802.50/479,642.90
  6. Step 6: Final answer
    x = 365,384.51

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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.