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Finding the Fourth Proportional to 438,197.04, 657,567.72 and 280,538.64

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Solution

The fourth proportional to 438,197.04, 657,567.72 and 280,538.64 is: 420,982.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,197.04 : 657,567.72 = 280,538.64 : x
  2. Step 2: Convert to fraction form
    438,197.04/657,567.72 = 280,538.64/x
  3. Step 3: Cross multiply
    438,197.04x = 657,567.72 × 280,538.64
  4. Step 4: Simplify right side
    438,197.04x = 184,473,153,876.70
  5. Step 5: Solve for x
    x = 184,473,153,876.70/438,197.04
  6. Step 6: Final answer
    x = 420,982.20

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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.