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Finding the Fourth Proportional to 316,699.94, 437,047.09 and 171,505.81

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Solution

The fourth proportional to 316,699.94, 437,047.09 and 171,505.81 is: 236,678.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,699.94 : 437,047.09 = 171,505.81 : x
  2. Step 2: Convert to fraction form
    316,699.94/437,047.09 = 171,505.81/x
  3. Step 3: Cross multiply
    316,699.94x = 437,047.09 × 171,505.81
  4. Step 4: Simplify right side
    316,699.94x = 74,956,112,564.59
  5. Step 5: Solve for x
    x = 74,956,112,564.59/316,699.94
  6. Step 6: Final answer
    x = 236,678.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.