Home / 258,620,511.40-387,930,767.10-230,560,426.60

Finding the Fourth Proportional to 258,620,511.40, 387,930,767.10 and 230,560,426.60

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Solution

The fourth proportional to 258,620,511.40, 387,930,767.10 and 230,560,426.60 is: 345,840,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,620,511.40 : 387,930,767.10 = 230,560,426.60 : x
  2. Step 2: Convert to fraction form
    258,620,511.40/387,930,767.10 = 230,560,426.60/x
  3. Step 3: Cross multiply
    258,620,511.40x = 387,930,767.10 × 230,560,426.60
  4. Step 4: Simplify right side
    258,620,511.40x = 89,441,483,153,841,248
  5. Step 5: Solve for x
    x = 89,441,483,153,841,248/258,620,511.40
  6. Step 6: Final answer
    x = 345,840,639.90

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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.