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Finding the Fourth Proportional to 402,701.20, 603,676.12 and 136,276.40

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Solution

The fourth proportional to 402,701.20, 603,676.12 and 136,276.40 is: 204,287.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,701.20 : 603,676.12 = 136,276.40 : x
  2. Step 2: Convert to fraction form
    402,701.20/603,676.12 = 136,276.40/x
  3. Step 3: Cross multiply
    402,701.20x = 603,676.12 × 136,276.40
  4. Step 4: Simplify right side
    402,701.20x = 82,266,808,399.57
  5. Step 5: Solve for x
    x = 82,266,808,399.57/402,701.20
  6. Step 6: Final answer
    x = 204,287.47

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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.