Home / 438,200.79-657,573.35-280,542.39

Finding the Fourth Proportional to 438,200.79, 657,573.35 and 280,542.39

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Solution

The fourth proportional to 438,200.79, 657,573.35 and 280,542.39 is: 420,987.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,200.79 : 657,573.35 = 280,542.39 : x
  2. Step 2: Convert to fraction form
    438,200.79/657,573.35 = 280,542.39/x
  3. Step 3: Cross multiply
    438,200.79x = 657,573.35 × 280,542.39
  4. Step 4: Simplify right side
    438,200.79x = 184,477,197,806.60
  5. Step 5: Solve for x
    x = 184,477,197,806.60/438,200.79
  6. Step 6: Final answer
    x = 420,987.83

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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.