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Finding the Fourth Proportional to 478,506.96, 660,340.89 and 263,646.36

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Solution

The fourth proportional to 478,506.96, 660,340.89 and 263,646.36 is: 363,832.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,506.96 : 660,340.89 = 263,646.36 : x
  2. Step 2: Convert to fraction form
    478,506.96/660,340.89 = 263,646.36/x
  3. Step 3: Cross multiply
    478,506.96x = 660,340.89 × 263,646.36
  4. Step 4: Simplify right side
    478,506.96x = 174,096,472,007.66
  5. Step 5: Solve for x
    x = 174,096,472,007.66/478,506.96
  6. Step 6: Final answer
    x = 363,832.68

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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.