Home / 457,238.30-631,296.95-285,417.86

Finding the Fourth Proportional to 457,238.30, 631,296.95 and 285,417.86

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Solution

The fourth proportional to 457,238.30, 631,296.95 and 285,417.86 is: 394,068.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,238.30 : 631,296.95 = 285,417.86 : x
  2. Step 2: Convert to fraction form
    457,238.30/631,296.95 = 285,417.86/x
  3. Step 3: Cross multiply
    457,238.30x = 631,296.95 × 285,417.86
  4. Step 4: Simplify right side
    457,238.30x = 180,183,419,909.95
  5. Step 5: Solve for x
    x = 180,183,419,909.95/457,238.30
  6. Step 6: Final answer
    x = 394,068.96

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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.