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Finding the Fourth Proportional to 499,073.94, 688,754.70 and 281,336.22

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Solution

The fourth proportional to 499,073.94, 688,754.70 and 281,336.22 is: 388,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,073.94 : 688,754.70 = 281,336.22 : x
  2. Step 2: Convert to fraction form
    499,073.94/688,754.70 = 281,336.22/x
  3. Step 3: Cross multiply
    499,073.94x = 688,754.70 × 281,336.22
  4. Step 4: Simplify right side
    499,073.94x = 193,771,643,805.23
  5. Step 5: Solve for x
    x = 193,771,643,805.23/499,073.94
  6. Step 6: Final answer
    x = 388,262.40

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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.