Home / 219,289.55-302,692.56-128,612.43

Finding the Fourth Proportional to 219,289.55, 302,692.56 and 128,612.43

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Solution

The fourth proportional to 219,289.55, 302,692.56 and 128,612.43 is: 177,527.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,289.55 : 302,692.56 = 128,612.43 : x
  2. Step 2: Convert to fraction form
    219,289.55/302,692.56 = 128,612.43/x
  3. Step 3: Cross multiply
    219,289.55x = 302,692.56 × 128,612.43
  4. Step 4: Simplify right side
    219,289.55x = 38,930,025,925.67
  5. Step 5: Solve for x
    x = 38,930,025,925.67/219,289.55
  6. Step 6: Final answer
    x = 177,527.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.