Home / 338,976,006.80-508,464,010.20-257,346,669.20

Finding the Fourth Proportional to 338,976,006.80, 508,464,010.20 and 257,346,669.20

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Solution

The fourth proportional to 338,976,006.80, 508,464,010.20 and 257,346,669.20 is: 386,020,003.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,976,006.80 : 508,464,010.20 = 257,346,669.20 : x
  2. Step 2: Convert to fraction form
    338,976,006.80/508,464,010.20 = 257,346,669.20/x
  3. Step 3: Cross multiply
    338,976,006.80x = 508,464,010.20 × 257,346,669.20
  4. Step 4: Simplify right side
    338,976,006.80x = 130,851,519,433,044,816
  5. Step 5: Solve for x
    x = 130,851,519,433,044,816/338,976,006.80
  6. Step 6: Final answer
    x = 386,020,003.80

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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.