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Finding the Fourth Proportional to 611,009.60, 916,600.80 and 190,241.60

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Solution

The fourth proportional to 611,009.60, 916,600.80 and 190,241.60 is: 285,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,009.60 : 916,600.80 = 190,241.60 : x
  2. Step 2: Convert to fraction form
    611,009.60/916,600.80 = 190,241.60/x
  3. Step 3: Cross multiply
    611,009.60x = 916,600.80 × 190,241.60
  4. Step 4: Simplify right side
    611,009.60x = 174,375,602,753.28
  5. Step 5: Solve for x
    x = 174,375,602,753.28/611,009.60
  6. Step 6: Final answer
    x = 285,389.30

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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.