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Finding the Fourth Proportional to 453,651.40, 680,477.10 and 217,455.40

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Solution

The fourth proportional to 453,651.40, 680,477.10 and 217,455.40 is: 326,183.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,651.40 : 680,477.10 = 217,455.40 : x
  2. Step 2: Convert to fraction form
    453,651.40/680,477.10 = 217,455.40/x
  3. Step 3: Cross multiply
    453,651.40x = 680,477.10 × 217,455.40
  4. Step 4: Simplify right side
    453,651.40x = 147,973,419,971.34
  5. Step 5: Solve for x
    x = 147,973,419,971.34/453,651.40
  6. Step 6: Final answer
    x = 326,183.10

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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.