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Finding the Fourth Proportional to 311,020.60, 466,530.90 and 100,809.40

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Solution

The fourth proportional to 311,020.60, 466,530.90 and 100,809.40 is: 151,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,020.60 : 466,530.90 = 100,809.40 : x
  2. Step 2: Convert to fraction form
    311,020.60/466,530.90 = 100,809.40/x
  3. Step 3: Cross multiply
    311,020.60x = 466,530.90 × 100,809.40
  4. Step 4: Simplify right side
    311,020.60x = 47,030,700,110.46
  5. Step 5: Solve for x
    x = 47,030,700,110.46/311,020.60
  6. Step 6: Final answer
    x = 151,214.10

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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.