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Finding the Fourth Proportional to 612,137.63, 918,259.37 and 168,905.63

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Solution

The fourth proportional to 612,137.63, 918,259.37 and 168,905.63 is: 253,373.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,137.63 : 918,259.37 = 168,905.63 : x
  2. Step 2: Convert to fraction form
    612,137.63/918,259.37 = 168,905.63/x
  3. Step 3: Cross multiply
    612,137.63x = 918,259.37 × 168,905.63
  4. Step 4: Simplify right side
    612,137.63x = 155,099,171,957.43
  5. Step 5: Solve for x
    x = 155,099,171,957.43/612,137.63
  6. Step 6: Final answer
    x = 253,373.04

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1.5x scale

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.