Home / 219,362.55-302,692.49-128,685.43

Finding the Fourth Proportional to 219,362.55, 302,692.49 and 128,685.43

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Solution

The fourth proportional to 219,362.55, 302,692.49 and 128,685.43 is: 177,569.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,362.55 : 302,692.49 = 128,685.43 : x
  2. Step 2: Convert to fraction form
    219,362.55/302,692.49 = 128,685.43/x
  3. Step 3: Cross multiply
    219,362.55x = 302,692.49 × 128,685.43
  4. Step 4: Simplify right side
    219,362.55x = 38,952,112,883.38
  5. Step 5: Solve for x
    x = 38,952,112,883.38/219,362.55
  6. Step 6: Final answer
    x = 177,569.57

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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.