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Finding the Fourth Proportional to 296,638.60, 444,914.70 and 86,254.60

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Solution

The fourth proportional to 296,638.60, 444,914.70 and 86,254.60 is: 129,369.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,638.60 : 444,914.70 = 86,254.60 : x
  2. Step 2: Convert to fraction form
    296,638.60/444,914.70 = 86,254.60/x
  3. Step 3: Cross multiply
    296,638.60x = 444,914.70 × 86,254.60
  4. Step 4: Simplify right side
    296,638.60x = 38,375,939,482.62
  5. Step 5: Solve for x
    x = 38,375,939,482.62/296,638.60
  6. Step 6: Final answer
    x = 129,369.34

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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.