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Finding the Fourth Proportional to 372,003.30, 557,020.80 and 292,615.20

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Solution

The fourth proportional to 372,003.30, 557,020.80 and 292,615.20 is: 438,148.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,003.30 : 557,020.80 = 292,615.20 : x
  2. Step 2: Convert to fraction form
    372,003.30/557,020.80 = 292,615.20/x
  3. Step 3: Cross multiply
    372,003.30x = 557,020.80 × 292,615.20
  4. Step 4: Simplify right side
    372,003.30x = 162,992,752,796.16
  5. Step 5: Solve for x
    x = 162,992,752,796.16/372,003.30
  6. Step 6: Final answer
    x = 438,148.67

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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.