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Finding the Fourth Proportional to 425,251,446.80, 637,843,992.60 and 166,416,400.40

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Solution

The fourth proportional to 425,251,446.80, 637,843,992.60 and 166,416,400.40 is: 249,611,617.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,251,446.80 : 637,843,992.60 = 166,416,400.40 : x
  2. Step 2: Convert to fraction form
    425,251,446.80/637,843,992.60 = 166,416,400.40/x
  3. Step 3: Cross multiply
    425,251,446.80x = 637,843,992.60 × 166,416,400.40
  4. Step 4: Simplify right side
    425,251,446.80x = 106,147,701,265,256,240
  5. Step 5: Solve for x
    x = 106,147,701,265,256,240/425,251,446.80
  6. Step 6: Final answer
    x = 249,611,617.00

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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.