Home / 199,619.60-299,429.40-187,809.80

Finding the Fourth Proportional to 199,619.60, 299,429.40 and 187,809.80

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Solution

The fourth proportional to 199,619.60, 299,429.40 and 187,809.80 is: 281,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,619.60 : 299,429.40 = 187,809.80 : x
  2. Step 2: Convert to fraction form
    199,619.60/299,429.40 = 187,809.80/x
  3. Step 3: Cross multiply
    199,619.60x = 299,429.40 × 187,809.80
  4. Step 4: Simplify right side
    199,619.60x = 56,235,775,728.12
  5. Step 5: Solve for x
    x = 56,235,775,728.12/199,619.60
  6. Step 6: Final answer
    x = 281,714.70

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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.