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Finding the Fourth Proportional to 457,236.93, 630,978.70 and 253,287.22

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Solution

The fourth proportional to 457,236.93, 630,978.70 and 253,287.22 is: 349,531.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,236.93 : 630,978.70 = 253,287.22 : x
  2. Step 2: Convert to fraction form
    457,236.93/630,978.70 = 253,287.22/x
  3. Step 3: Cross multiply
    457,236.93x = 630,978.70 × 253,287.22
  4. Step 4: Simplify right side
    457,236.93x = 159,818,839,893.37
  5. Step 5: Solve for x
    x = 159,818,839,893.37/457,236.93
  6. Step 6: Final answer
    x = 349,531.78

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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.