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Finding the Fourth Proportional to 457,345.04, 631,355.54 and 321,495.44

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Solution

The fourth proportional to 457,345.04, 631,355.54 and 321,495.44 is: 443,817.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,345.04 : 631,355.54 = 321,495.44 : x
  2. Step 2: Convert to fraction form
    457,345.04/631,355.54 = 321,495.44/x
  3. Step 3: Cross multiply
    457,345.04x = 631,355.54 × 321,495.44
  4. Step 4: Simplify right side
    457,345.04x = 202,977,922,364.48
  5. Step 5: Solve for x
    x = 202,977,922,364.48/457,345.04
  6. Step 6: Final answer
    x = 443,817.92

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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.