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Finding the Fourth Proportional to 402,470.90, 603,706.35 and 262,502.90

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Solution

The fourth proportional to 402,470.90, 603,706.35 and 262,502.90 is: 393,754.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,470.90 : 603,706.35 = 262,502.90 : x
  2. Step 2: Convert to fraction form
    402,470.90/603,706.35 = 262,502.90/x
  3. Step 3: Cross multiply
    402,470.90x = 603,706.35 × 262,502.90
  4. Step 4: Simplify right side
    402,470.90x = 158,474,667,623.42
  5. Step 5: Solve for x
    x = 158,474,667,623.42/402,470.90
  6. Step 6: Final answer
    x = 393,754.35

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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.