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Finding the Fourth Proportional to 505,389.69, 757,828.50 and 168,312.17

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Solution

The fourth proportional to 505,389.69, 757,828.50 and 168,312.17 is: 252,382.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,389.69 : 757,828.50 = 168,312.17 : x
  2. Step 2: Convert to fraction form
    505,389.69/757,828.50 = 168,312.17/x
  3. Step 3: Cross multiply
    505,389.69x = 757,828.50 × 168,312.17
  4. Step 4: Simplify right side
    505,389.69x = 127,551,755,533.70
  5. Step 5: Solve for x
    x = 127,551,755,533.70/505,389.69
  6. Step 6: Final answer
    x = 252,382.98

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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.