Home / 438,306.80-657,485.20-122,788.31

Finding the Fourth Proportional to 438,306.80, 657,485.20 and 122,788.31

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Solution

The fourth proportional to 438,306.80, 657,485.20 and 122,788.31 is: 184,189.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,306.80 : 657,485.20 = 122,788.31 : x
  2. Step 2: Convert to fraction form
    438,306.80/657,485.20 = 122,788.31/x
  3. Step 3: Cross multiply
    438,306.80x = 657,485.20 × 122,788.31
  4. Step 4: Simplify right side
    438,306.80x = 80,731,493,424.07
  5. Step 5: Solve for x
    x = 80,731,493,424.07/438,306.80
  6. Step 6: Final answer
    x = 184,189.46

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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.