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Finding the Fourth Proportional to 457,820.77, 631,789.47 and 253,871.80

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Solution

The fourth proportional to 457,820.77, 631,789.47 and 253,871.80 is: 350,341.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,820.77 : 631,789.47 = 253,871.80 : x
  2. Step 2: Convert to fraction form
    457,820.77/631,789.47 = 253,871.80/x
  3. Step 3: Cross multiply
    457,820.77x = 631,789.47 × 253,871.80
  4. Step 4: Simplify right side
    457,820.77x = 160,393,529,969.95
  5. Step 5: Solve for x
    x = 160,393,529,969.95/457,820.77
  6. Step 6: Final answer
    x = 350,341.31

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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.