Home / 258,108,003.40-387,162,005.10-199,657,366.60

Finding the Fourth Proportional to 258,108,003.40, 387,162,005.10 and 199,657,366.60

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Solution

The fourth proportional to 258,108,003.40, 387,162,005.10 and 199,657,366.60 is: 299,486,049.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,108,003.40 : 387,162,005.10 = 199,657,366.60 : x
  2. Step 2: Convert to fraction form
    258,108,003.40/387,162,005.10 = 199,657,366.60/x
  3. Step 3: Cross multiply
    258,108,003.40x = 387,162,005.10 × 199,657,366.60
  4. Step 4: Simplify right side
    258,108,003.40x = 77,299,746,385,841,776
  5. Step 5: Solve for x
    x = 77,299,746,385,841,776/258,108,003.40
  6. Step 6: Final answer
    x = 299,486,049.90

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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.