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Finding the Fourth Proportional to 438,768.56, 657,655.30 and 201,621.22

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Solution

The fourth proportional to 438,768.56, 657,655.30 and 201,621.22 is: 302,203.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,768.56 : 657,655.30 = 201,621.22 : x
  2. Step 2: Convert to fraction form
    438,768.56/657,655.30 = 201,621.22/x
  3. Step 3: Cross multiply
    438,768.56x = 657,655.30 × 201,621.22
  4. Step 4: Simplify right side
    438,768.56x = 132,597,262,533.35
  5. Step 5: Solve for x
    x = 132,597,262,533.35/438,768.56
  6. Step 6: Final answer
    x = 302,203.20

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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.