Home / 422,439.32-633,667.08-138,130.94

Finding the Fourth Proportional to 422,439.32, 633,667.08 and 138,130.94

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Solution

The fourth proportional to 422,439.32, 633,667.08 and 138,130.94 is: 207,199.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,439.32 : 633,667.08 = 138,130.94 : x
  2. Step 2: Convert to fraction form
    422,439.32/633,667.08 = 138,130.94/x
  3. Step 3: Cross multiply
    422,439.32x = 633,667.08 × 138,130.94
  4. Step 4: Simplify right side
    422,439.32x = 87,529,029,407.46
  5. Step 5: Solve for x
    x = 87,529,029,407.46/422,439.32
  6. Step 6: Final answer
    x = 207,199.06

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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.