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Finding the Fourth Proportional to 291,073,365.60, 436,610,048.40 and 118,673,905.20

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Solution

The fourth proportional to 291,073,365.60, 436,610,048.40 and 118,673,905.20 is: 178,010,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,073,365.60 : 436,610,048.40 = 118,673,905.20 : x
  2. Step 2: Convert to fraction form
    291,073,365.60/436,610,048.40 = 118,673,905.20/x
  3. Step 3: Cross multiply
    291,073,365.60x = 436,610,048.40 × 118,673,905.20
  4. Step 4: Simplify right side
    291,073,365.60x = 51,814,219,493,189,008
  5. Step 5: Solve for x
    x = 51,814,219,493,189,008/291,073,365.60
  6. Step 6: Final answer
    x = 178,010,857.80

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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.