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Finding the Fourth Proportional to 438,467.10, 657,652.05 and 122,955.90

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Solution

The fourth proportional to 438,467.10, 657,652.05 and 122,955.90 is: 184,420.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,467.10 : 657,652.05 = 122,955.90 : x
  2. Step 2: Convert to fraction form
    438,467.10/657,652.05 = 122,955.90/x
  3. Step 3: Cross multiply
    438,467.10x = 657,652.05 × 122,955.90
  4. Step 4: Simplify right side
    438,467.10x = 80,862,199,694.60
  5. Step 5: Solve for x
    x = 80,862,199,694.60/438,467.10
  6. Step 6: Final answer
    x = 184,420.22

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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.