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Finding the Fourth Proportional to 212,606.70, 318,910.05 and 202,238.70

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Solution

The fourth proportional to 212,606.70, 318,910.05 and 202,238.70 is: 303,358.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,606.70 : 318,910.05 = 202,238.70 : x
  2. Step 2: Convert to fraction form
    212,606.70/318,910.05 = 202,238.70/x
  3. Step 3: Cross multiply
    212,606.70x = 318,910.05 × 202,238.70
  4. Step 4: Simplify right side
    212,606.70x = 64,495,953,928.94
  5. Step 5: Solve for x
    x = 64,495,953,928.94/212,606.70
  6. Step 6: Final answer
    x = 303,358.05

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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.