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Finding the Fourth Proportional to 611,310.60, 917,006.40 and 162,025.20

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Solution

The fourth proportional to 611,310.60, 917,006.40 and 162,025.20 is: 243,048.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,310.60 : 917,006.40 = 162,025.20 : x
  2. Step 2: Convert to fraction form
    611,310.60/917,006.40 = 162,025.20/x
  3. Step 3: Cross multiply
    611,310.60x = 917,006.40 × 162,025.20
  4. Step 4: Simplify right side
    611,310.60x = 148,578,145,361.28
  5. Step 5: Solve for x
    x = 148,578,145,361.28/611,310.60
  6. Step 6: Final answer
    x = 243,048.53

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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.