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Finding the Fourth Proportional to 496,326.16, 684,865.20 and 281,387.68

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Solution

The fourth proportional to 496,326.16, 684,865.20 and 281,387.68 is: 388,278.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,326.16 : 684,865.20 = 281,387.68 : x
  2. Step 2: Convert to fraction form
    496,326.16/684,865.20 = 281,387.68/x
  3. Step 3: Cross multiply
    496,326.16x = 684,865.20 × 281,387.68
  4. Step 4: Simplify right side
    496,326.16x = 192,712,629,740.74
  5. Step 5: Solve for x
    x = 192,712,629,740.74/496,326.16
  6. Step 6: Final answer
    x = 388,278.20

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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.