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Finding the Fourth Proportional to 219,666.60, 329,499.90 and 120,133.80

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Solution

The fourth proportional to 219,666.60, 329,499.90 and 120,133.80 is: 180,200.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,666.60 : 329,499.90 = 120,133.80 : x
  2. Step 2: Convert to fraction form
    219,666.60/329,499.90 = 120,133.80/x
  3. Step 3: Cross multiply
    219,666.60x = 329,499.90 × 120,133.80
  4. Step 4: Simplify right side
    219,666.60x = 39,584,075,086.62
  5. Step 5: Solve for x
    x = 39,584,075,086.62/219,666.60
  6. Step 6: Final answer
    x = 180,200.70

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1.5x scale

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.