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Finding the Fourth Proportional to 450,455.75, 621,567.47 and 269,129.15

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Solution

The fourth proportional to 450,455.75, 621,567.47 and 269,129.15 is: 371,361.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,455.75 : 621,567.47 = 269,129.15 : x
  2. Step 2: Convert to fraction form
    450,455.75/621,567.47 = 269,129.15/x
  3. Step 3: Cross multiply
    450,455.75x = 621,567.47 × 269,129.15
  4. Step 4: Simplify right side
    450,455.75x = 167,281,924,764.61
  5. Step 5: Solve for x
    x = 167,281,924,764.61/450,455.75
  6. Step 6: Final answer
    x = 371,361.50

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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.