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Finding the Fourth Proportional to 211,523.66, 291,855.42 and 125,438.90

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Solution

The fourth proportional to 211,523.66, 291,855.42 and 125,438.90 is: 173,077.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,523.66 : 291,855.42 = 125,438.90 : x
  2. Step 2: Convert to fraction form
    211,523.66/291,855.42 = 125,438.90/x
  3. Step 3: Cross multiply
    211,523.66x = 291,855.42 × 125,438.90
  4. Step 4: Simplify right side
    211,523.66x = 36,610,021,384.56
  5. Step 5: Solve for x
    x = 36,610,021,384.56/211,523.66
  6. Step 6: Final answer
    x = 173,077.67

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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.