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Finding the Fourth Proportional to 438,749.80, 657,606.30 and 186,029.80

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Solution

The fourth proportional to 438,749.80, 657,606.30 and 186,029.80 is: 278,824.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,749.80 : 657,606.30 = 186,029.80 : x
  2. Step 2: Convert to fraction form
    438,749.80/657,606.30 = 186,029.80/x
  3. Step 3: Cross multiply
    438,749.80x = 657,606.30 × 186,029.80
  4. Step 4: Simplify right side
    438,749.80x = 122,334,368,467.74
  5. Step 5: Solve for x
    x = 122,334,368,467.74/438,749.80
  6. Step 6: Final answer
    x = 278,824.90

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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.