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Finding the Fourth Proportional to 520,084.50, 717,716.61 and 281,620.50

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Solution

The fourth proportional to 520,084.50, 717,716.61 and 281,620.50 is: 388,636.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,084.50 : 717,716.61 = 281,620.50 : x
  2. Step 2: Convert to fraction form
    520,084.50/717,716.61 = 281,620.50/x
  3. Step 3: Cross multiply
    520,084.50x = 717,716.61 × 281,620.50
  4. Step 4: Simplify right side
    520,084.50x = 202,123,710,566.51
  5. Step 5: Solve for x
    x = 202,123,710,566.51/520,084.50
  6. Step 6: Final answer
    x = 388,636.29

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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.