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Finding the Fourth Proportional to 402,718.91, 603,701.10 and 136,292.90

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Solution

The fourth proportional to 402,718.91, 603,701.10 and 136,292.90 is: 204,311.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,718.91 : 603,701.10 = 136,292.90 : x
  2. Step 2: Convert to fraction form
    402,718.91/603,701.10 = 136,292.90/x
  3. Step 3: Cross multiply
    402,718.91x = 603,701.10 × 136,292.90
  4. Step 4: Simplify right side
    402,718.91x = 82,280,170,633.68
  5. Step 5: Solve for x
    x = 82,280,170,633.68/402,718.91
  6. Step 6: Final answer
    x = 204,311.67

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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.