Home / 258,560,890.80-387,841,336.20-161,815,009.20

Finding the Fourth Proportional to 258,560,890.80, 387,841,336.20 and 161,815,009.20

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Solution

The fourth proportional to 258,560,890.80, 387,841,336.20 and 161,815,009.20 is: 242,722,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,560,890.80 : 387,841,336.20 = 161,815,009.20 : x
  2. Step 2: Convert to fraction form
    258,560,890.80/387,841,336.20 = 161,815,009.20/x
  3. Step 3: Cross multiply
    258,560,890.80x = 387,841,336.20 × 161,815,009.20
  4. Step 4: Simplify right side
    258,560,890.80x = 62,758,549,385,343,288
  5. Step 5: Solve for x
    x = 62,758,549,385,343,288/258,560,890.80
  6. Step 6: Final answer
    x = 242,722,513.80

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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.