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Finding the Fourth Proportional to 611,309.10, 917,004.15 and 162,023.70

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Solution

The fourth proportional to 611,309.10, 917,004.15 and 162,023.70 is: 243,046.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,309.10 : 917,004.15 = 162,023.70 : x
  2. Step 2: Convert to fraction form
    611,309.10/917,004.15 = 162,023.70/x
  3. Step 3: Cross multiply
    611,309.10x = 917,004.15 × 162,023.70
  4. Step 4: Simplify right side
    611,309.10x = 148,576,405,298.36
  5. Step 5: Solve for x
    x = 148,576,405,298.36/611,309.10
  6. Step 6: Final answer
    x = 243,046.28

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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.