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Finding the Fourth Proportional to 402,706.41, 603,682.35 and 136,280.40

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Solution

The fourth proportional to 402,706.41, 603,682.35 and 136,280.40 is: 204,292.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,706.41 : 603,682.35 = 136,280.40 : x
  2. Step 2: Convert to fraction form
    402,706.41/603,682.35 = 136,280.40/x
  3. Step 3: Cross multiply
    402,706.41x = 603,682.35 × 136,280.40
  4. Step 4: Simplify right side
    402,706.41x = 82,270,072,130.94
  5. Step 5: Solve for x
    x = 82,270,072,130.94/402,706.41
  6. Step 6: Final answer
    x = 204,292.93

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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.