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Finding the Fourth Proportional to 317,918.52, 438,702.48 and 181,955.16

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Solution

The fourth proportional to 317,918.52, 438,702.48 and 181,955.16 is: 251,083.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,918.52 : 438,702.48 = 181,955.16 : x
  2. Step 2: Convert to fraction form
    317,918.52/438,702.48 = 181,955.16/x
  3. Step 3: Cross multiply
    317,918.52x = 438,702.48 × 181,955.16
  4. Step 4: Simplify right side
    317,918.52x = 79,824,179,940.80
  5. Step 5: Solve for x
    x = 79,824,179,940.80/317,918.52
  6. Step 6: Final answer
    x = 251,083.77

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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.