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Finding the Fourth Proportional to 479,506.15, 661,715.23 and 264,646.21

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Solution

The fourth proportional to 479,506.15, 661,715.23 and 264,646.21 is: 365,209.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,506.15 : 661,715.23 = 264,646.21 : x
  2. Step 2: Convert to fraction form
    479,506.15/661,715.23 = 264,646.21/x
  3. Step 3: Cross multiply
    479,506.15x = 661,715.23 × 264,646.21
  4. Step 4: Simplify right side
    479,506.15x = 175,120,425,072.07
  5. Step 5: Solve for x
    x = 175,120,425,072.07/479,506.15
  6. Step 6: Final answer
    x = 365,209.97

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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.