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Finding the Fourth Proportional to 505,988.21, 758,870.53 and 146,080.87

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Solution

The fourth proportional to 505,988.21, 758,870.53 and 146,080.87 is: 219,089.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,988.21 : 758,870.53 = 146,080.87 : x
  2. Step 2: Convert to fraction form
    505,988.21/758,870.53 = 146,080.87/x
  3. Step 3: Cross multiply
    505,988.21x = 758,870.53 × 146,080.87
  4. Step 4: Simplify right side
    505,988.21x = 110,856,464,977.38
  5. Step 5: Solve for x
    x = 110,856,464,977.38/505,988.21
  6. Step 6: Final answer
    x = 219,089.03

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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.