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Finding the Fourth Proportional to 613,289.60, 919,869.68 and 164,055.80

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Solution

The fourth proportional to 613,289.60, 919,869.68 and 164,055.80 is: 246,066.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,289.60 : 919,869.68 = 164,055.80 : x
  2. Step 2: Convert to fraction form
    613,289.60/919,869.68 = 164,055.80/x
  3. Step 3: Cross multiply
    613,289.60x = 919,869.68 × 164,055.80
  4. Step 4: Simplify right side
    613,289.60x = 150,909,956,248.14
  5. Step 5: Solve for x
    x = 150,909,956,248.14/613,289.60
  6. Step 6: Final answer
    x = 246,066.39

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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.