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Finding the Fourth Proportional to 496,503.68, 685,154.90 and 281,639.13

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Solution

The fourth proportional to 496,503.68, 685,154.90 and 281,639.13 is: 388,650.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,503.68 : 685,154.90 = 281,639.13 : x
  2. Step 2: Convert to fraction form
    496,503.68/685,154.90 = 281,639.13/x
  3. Step 3: Cross multiply
    496,503.68x = 685,154.90 × 281,639.13
  4. Step 4: Simplify right side
    496,503.68x = 192,966,425,117.27
  5. Step 5: Solve for x
    x = 192,966,425,117.27/496,503.68
  6. Step 6: Final answer
    x = 388,650.55

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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.