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Finding the Fourth Proportional to 457,305.57, 630,729.46 and 275,828.31

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Solution

The fourth proportional to 457,305.57, 630,729.46 and 275,828.31 is: 380,430.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,305.57 : 630,729.46 = 275,828.31 : x
  2. Step 2: Convert to fraction form
    457,305.57/630,729.46 = 275,828.31/x
  3. Step 3: Cross multiply
    457,305.57x = 630,729.46 × 275,828.31
  4. Step 4: Simplify right side
    457,305.57x = 173,973,041,019.01
  5. Step 5: Solve for x
    x = 173,973,041,019.01/457,305.57
  6. Step 6: Final answer
    x = 380,430.62

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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.