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Finding the Fourth Proportional to 452,498.40, 678,315.60 and 168,112.80

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Solution

The fourth proportional to 452,498.40, 678,315.60 and 168,112.80 is: 252,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,498.40 : 678,315.60 = 168,112.80 : x
  2. Step 2: Convert to fraction form
    452,498.40/678,315.60 = 168,112.80/x
  3. Step 3: Cross multiply
    452,498.40x = 678,315.60 × 168,112.80
  4. Step 4: Simplify right side
    452,498.40x = 114,033,534,799.68
  5. Step 5: Solve for x
    x = 114,033,534,799.68/452,498.40
  6. Step 6: Final answer
    x = 252,008.70

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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.