Home / 215,155.79-322,438.44-136,128.55

Finding the Fourth Proportional to 215,155.79, 322,438.44 and 136,128.55

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Solution

The fourth proportional to 215,155.79, 322,438.44 and 136,128.55 is: 204,006.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,155.79 : 322,438.44 = 136,128.55 : x
  2. Step 2: Convert to fraction form
    215,155.79/322,438.44 = 136,128.55/x
  3. Step 3: Cross multiply
    215,155.79x = 322,438.44 × 136,128.55
  4. Step 4: Simplify right side
    215,155.79x = 43,893,075,635.55
  5. Step 5: Solve for x
    x = 43,893,075,635.55/215,155.79
  6. Step 6: Final answer
    x = 204,006.02

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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.