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Finding the Fourth Proportional to 505,172.07, 757,102.01 and 205,303.70

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Solution

The fourth proportional to 505,172.07, 757,102.01 and 205,303.70 is: 307,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,172.07 : 757,102.01 = 205,303.70 : x
  2. Step 2: Convert to fraction form
    505,172.07/757,102.01 = 205,303.70/x
  3. Step 3: Cross multiply
    505,172.07x = 757,102.01 × 205,303.70
  4. Step 4: Simplify right side
    505,172.07x = 155,435,839,118.41
  5. Step 5: Solve for x
    x = 155,435,839,118.41/505,172.07
  6. Step 6: Final answer
    x = 307,688.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.