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Finding the Fourth Proportional to 438,199.04, 657,570.72 and 280,540.64

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Solution

The fourth proportional to 438,199.04, 657,570.72 and 280,540.64 is: 420,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,199.04 : 657,570.72 = 280,540.64 : x
  2. Step 2: Convert to fraction form
    438,199.04/657,570.72 = 280,540.64/x
  3. Step 3: Cross multiply
    438,199.04x = 657,570.72 × 280,540.64
  4. Step 4: Simplify right side
    438,199.04x = 184,475,310,634.06
  5. Step 5: Solve for x
    x = 184,475,310,634.06/438,199.04
  6. Step 6: Final answer
    x = 420,985.20

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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.