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Finding the Fourth Proportional to 407,710.80, 611,663.40 and 197,175.60

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Solution

The fourth proportional to 407,710.80, 611,663.40 and 197,175.60 is: 295,810.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,710.80 : 611,663.40 = 197,175.60 : x
  2. Step 2: Convert to fraction form
    407,710.80/611,663.40 = 197,175.60/x
  3. Step 3: Cross multiply
    407,710.80x = 611,663.40 × 197,175.60
  4. Step 4: Simplify right side
    407,710.80x = 120,605,097,893.04
  5. Step 5: Solve for x
    x = 120,605,097,893.04/407,710.80
  6. Step 6: Final answer
    x = 295,810.41

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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.