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Finding the Fourth Proportional to 552,031.20, 761,866.21 and 307,040.73

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Solution

The fourth proportional to 552,031.20, 761,866.21 and 307,040.73 is: 423,751.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,031.20 : 761,866.21 = 307,040.73 : x
  2. Step 2: Convert to fraction form
    552,031.20/761,866.21 = 307,040.73/x
  3. Step 3: Cross multiply
    552,031.20x = 761,866.21 × 307,040.73
  4. Step 4: Simplify right side
    552,031.20x = 233,923,953,080.43
  5. Step 5: Solve for x
    x = 233,923,953,080.43/552,031.20
  6. Step 6: Final answer
    x = 423,751.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.