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Finding the Fourth Proportional to 328,646.88, 492,970.32 and 118,279.44

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Solution

The fourth proportional to 328,646.88, 492,970.32 and 118,279.44 is: 177,419.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,646.88 : 492,970.32 = 118,279.44 : x
  2. Step 2: Convert to fraction form
    328,646.88/492,970.32 = 118,279.44/x
  3. Step 3: Cross multiply
    328,646.88x = 492,970.32 × 118,279.44
  4. Step 4: Simplify right side
    328,646.88x = 58,308,253,386.22
  5. Step 5: Solve for x
    x = 58,308,253,386.22/328,646.88
  6. Step 6: Final answer
    x = 177,419.16

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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.