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Finding the Fourth Proportional to 357,704.16, 493,138.49 and 285,352.62

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Solution

The fourth proportional to 357,704.16, 493,138.49 and 285,352.62 is: 393,393.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,704.16 : 493,138.49 = 285,352.62 : x
  2. Step 2: Convert to fraction form
    357,704.16/493,138.49 = 285,352.62/x
  3. Step 3: Cross multiply
    357,704.16x = 493,138.49 × 285,352.62
  4. Step 4: Simplify right side
    357,704.16x = 140,718,360,857.73
  5. Step 5: Solve for x
    x = 140,718,360,857.73/357,704.16
  6. Step 6: Final answer
    x = 393,393.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.