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Finding the Fourth Proportional to 452,374.40, 678,129.60 and 167,988.80

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Solution

The fourth proportional to 452,374.40, 678,129.60 and 167,988.80 is: 251,822.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,374.40 : 678,129.60 = 167,988.80 : x
  2. Step 2: Convert to fraction form
    452,374.40/678,129.60 = 167,988.80/x
  3. Step 3: Cross multiply
    452,374.40x = 678,129.60 × 167,988.80
  4. Step 4: Simplify right side
    452,374.40x = 113,918,177,748.48
  5. Step 5: Solve for x
    x = 113,918,177,748.48/452,374.40
  6. Step 6: Final answer
    x = 251,822.78

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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.