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Finding the Fourth Proportional to 319,729.60, 479,813.10 and 177,574.60

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Solution

The fourth proportional to 319,729.60, 479,813.10 and 177,574.60 is: 266,483.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,729.60 : 479,813.10 = 177,574.60 : x
  2. Step 2: Convert to fraction form
    319,729.60/479,813.10 = 177,574.60/x
  3. Step 3: Cross multiply
    319,729.60x = 479,813.10 × 177,574.60
  4. Step 4: Simplify right side
    319,729.60x = 85,202,619,307.26
  5. Step 5: Solve for x
    x = 85,202,619,307.26/319,729.60
  6. Step 6: Final answer
    x = 266,483.36

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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.