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Finding the Fourth Proportional to 219,784.60, 330,065.70 and 169,985.80

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Solution

The fourth proportional to 219,784.60, 330,065.70 and 169,985.80 is: 255,279.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,784.60 : 330,065.70 = 169,985.80 : x
  2. Step 2: Convert to fraction form
    219,784.60/330,065.70 = 169,985.80/x
  3. Step 3: Cross multiply
    219,784.60x = 330,065.70 × 169,985.80
  4. Step 4: Simplify right side
    219,784.60x = 56,106,482,067.06
  5. Step 5: Solve for x
    x = 56,106,482,067.06/219,784.60
  6. Step 6: Final answer
    x = 255,279.41

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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.