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Finding the Fourth Proportional to 219,310,266.90, 328,965,400.35 and 90,010,671.60

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Solution

The fourth proportional to 219,310,266.90, 328,965,400.35 and 90,010,671.60 is: 135,016,007.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,310,266.90 : 328,965,400.35 = 90,010,671.60 : x
  2. Step 2: Convert to fraction form
    219,310,266.90/328,965,400.35 = 90,010,671.60/x
  3. Step 3: Cross multiply
    219,310,266.90x = 328,965,400.35 × 90,010,671.60
  4. Step 4: Simplify right side
    219,310,266.90x = 29,610,396,618,666,376
  5. Step 5: Solve for x
    x = 29,610,396,618,666,376/219,310,266.90
  6. Step 6: Final answer
    x = 135,016,007.40

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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.