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Finding the Fourth Proportional to 438,760.80, 657,157.05 and 360,028.80

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Solution

The fourth proportional to 438,760.80, 657,157.05 and 360,028.80 is: 539,235.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,760.80 : 657,157.05 = 360,028.80 : x
  2. Step 2: Convert to fraction form
    438,760.80/657,157.05 = 360,028.80/x
  3. Step 3: Cross multiply
    438,760.80x = 657,157.05 × 360,028.80
  4. Step 4: Simplify right side
    438,760.80x = 236,595,464,123.04
  5. Step 5: Solve for x
    x = 236,595,464,123.04/438,760.80
  6. Step 6: Final answer
    x = 539,235.65

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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.