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Finding the Fourth Proportional to 505,419.47, 758,077.16 and 168,423.69

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Solution

The fourth proportional to 505,419.47, 758,077.16 and 168,423.69 is: 252,618.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,419.47 : 758,077.16 = 168,423.69 : x
  2. Step 2: Convert to fraction form
    505,419.47/758,077.16 = 168,423.69/x
  3. Step 3: Cross multiply
    505,419.47x = 758,077.16 × 168,423.69
  4. Step 4: Simplify right side
    505,419.47x = 127,678,151,749.80
  5. Step 5: Solve for x
    x = 127,678,151,749.80/505,419.47
  6. Step 6: Final answer
    x = 252,618.19

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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.