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Finding the Fourth Proportional to 605,005.60, 907,439.20 and 161,808.16

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Solution

The fourth proportional to 605,005.60, 907,439.20 and 161,808.16 is: 242,693.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,005.60 : 907,439.20 = 161,808.16 : x
  2. Step 2: Convert to fraction form
    605,005.60/907,439.20 = 161,808.16/x
  3. Step 3: Cross multiply
    605,005.60x = 907,439.20 × 161,808.16
  4. Step 4: Simplify right side
    605,005.60x = 146,831,067,263.87
  5. Step 5: Solve for x
    x = 146,831,067,263.87/605,005.60
  6. Step 6: Final answer
    x = 242,693.73

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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.