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Finding the Fourth Proportional to 479,639.94, 661,904.10 and 264,780.30

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Solution

The fourth proportional to 479,639.94, 661,904.10 and 264,780.30 is: 365,397.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,639.94 : 661,904.10 = 264,780.30 : x
  2. Step 2: Convert to fraction form
    479,639.94/661,904.10 = 264,780.30/x
  3. Step 3: Cross multiply
    479,639.94x = 661,904.10 × 264,780.30
  4. Step 4: Simplify right side
    479,639.94x = 175,259,166,169.23
  5. Step 5: Solve for x
    x = 175,259,166,169.23/479,639.94
  6. Step 6: Final answer
    x = 365,397.36

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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.