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Finding the Fourth Proportional to 219,312.80, 328,742.40 and 119,261.60

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Solution

The fourth proportional to 219,312.80, 328,742.40 and 119,261.60 is: 178,769.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,312.80 : 328,742.40 = 119,261.60 : x
  2. Step 2: Convert to fraction form
    219,312.80/328,742.40 = 119,261.60/x
  3. Step 3: Cross multiply
    219,312.80x = 328,742.40 × 119,261.60
  4. Step 4: Simplify right side
    219,312.80x = 39,206,344,611.84
  5. Step 5: Solve for x
    x = 39,206,344,611.84/219,312.80
  6. Step 6: Final answer
    x = 178,769.07

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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.