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Finding the Fourth Proportional to 457,347.90, 630,939.06 and 275,958.66

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Solution

The fourth proportional to 457,347.90, 630,939.06 and 275,958.66 is: 380,701.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,347.90 : 630,939.06 = 275,958.66 : x
  2. Step 2: Convert to fraction form
    457,347.90/630,939.06 = 275,958.66/x
  3. Step 3: Cross multiply
    457,347.90x = 630,939.06 × 275,958.66
  4. Step 4: Simplify right side
    457,347.90x = 174,113,097,539.26
  5. Step 5: Solve for x
    x = 174,113,097,539.26/457,347.90
  6. Step 6: Final answer
    x = 380,701.64

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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.