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Finding the Fourth Proportional to 505,869.10, 758,803.65 and 131,892.10

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Solution

The fourth proportional to 505,869.10, 758,803.65 and 131,892.10 is: 197,838.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,869.10 : 758,803.65 = 131,892.10 : x
  2. Step 2: Convert to fraction form
    505,869.10/758,803.65 = 131,892.10/x
  3. Step 3: Cross multiply
    505,869.10x = 758,803.65 × 131,892.10
  4. Step 4: Simplify right side
    505,869.10x = 100,080,206,886.17
  5. Step 5: Solve for x
    x = 100,080,206,886.17/505,869.10
  6. Step 6: Final answer
    x = 197,838.15

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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.