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Finding the Fourth Proportional to 478,709.18, 660,615.36 and 263,849.36

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Solution

The fourth proportional to 478,709.18, 660,615.36 and 263,849.36 is: 364,110.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,709.18 : 660,615.36 = 263,849.36 : x
  2. Step 2: Convert to fraction form
    478,709.18/660,615.36 = 263,849.36/x
  3. Step 3: Cross multiply
    478,709.18x = 660,615.36 × 263,849.36
  4. Step 4: Simplify right side
    478,709.18x = 174,302,939,942.17
  5. Step 5: Solve for x
    x = 174,302,939,942.17/478,709.18
  6. Step 6: Final answer
    x = 364,110.29

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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.