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Finding the Fourth Proportional to 438,526.80, 657,790.20 and 123,037.20

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Solution

The fourth proportional to 438,526.80, 657,790.20 and 123,037.20 is: 184,555.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,526.80 : 657,790.20 = 123,037.20 : x
  2. Step 2: Convert to fraction form
    438,526.80/657,790.20 = 123,037.20/x
  3. Step 3: Cross multiply
    438,526.80x = 657,790.20 × 123,037.20
  4. Step 4: Simplify right side
    438,526.80x = 80,932,664,395.44
  5. Step 5: Solve for x
    x = 80,932,664,395.44/438,526.80
  6. Step 6: Final answer
    x = 184,555.80

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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.