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Finding the Fourth Proportional to 488,335.80, 731,628.90 and 301,128.60

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Solution

The fourth proportional to 488,335.80, 731,628.90 and 301,128.60 is: 451,153.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,335.80 : 731,628.90 = 301,128.60 : x
  2. Step 2: Convert to fraction form
    488,335.80/731,628.90 = 301,128.60/x
  3. Step 3: Cross multiply
    488,335.80x = 731,628.90 × 301,128.60
  4. Step 4: Simplify right side
    488,335.80x = 220,314,386,376.54
  5. Step 5: Solve for x
    x = 220,314,386,376.54/488,335.80
  6. Step 6: Final answer
    x = 451,153.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.