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Finding the Fourth Proportional to 211,230.76, 316,846.12 and 70,989.38

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Solution

The fourth proportional to 211,230.76, 316,846.12 and 70,989.38 is: 106,484.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,230.76 : 316,846.12 = 70,989.38 : x
  2. Step 2: Convert to fraction form
    211,230.76/316,846.12 = 70,989.38/x
  3. Step 3: Cross multiply
    211,230.76x = 316,846.12 × 70,989.38
  4. Step 4: Simplify right side
    211,230.76x = 22,492,709,614.21
  5. Step 5: Solve for x
    x = 22,492,709,614.21/211,230.76
  6. Step 6: Final answer
    x = 106,484.06

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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.