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Finding the Fourth Proportional to 457,577.66, 631,243.58 and 287,905.34

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Solution

The fourth proportional to 457,577.66, 631,243.58 and 287,905.34 is: 397,174.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,577.66 : 631,243.58 = 287,905.34 : x
  2. Step 2: Convert to fraction form
    457,577.66/631,243.58 = 287,905.34/x
  3. Step 3: Cross multiply
    457,577.66x = 631,243.58 × 287,905.34
  4. Step 4: Simplify right side
    457,577.66x = 181,738,397,522.72
  5. Step 5: Solve for x
    x = 181,738,397,522.72/457,577.66
  6. Step 6: Final answer
    x = 397,174.98

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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.