Home / 268,642,983.20-403,064,007.60-258,689,703.20

Finding the Fourth Proportional to 268,642,983.20, 403,064,007.60 and 258,689,703.20

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Solution

The fourth proportional to 268,642,983.20, 403,064,007.60 and 258,689,703.20 is: 388,130,399.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,642,983.20 : 403,064,007.60 = 258,689,703.20 : x
  2. Step 2: Convert to fraction form
    268,642,983.20/403,064,007.60 = 258,689,703.20/x
  3. Step 3: Cross multiply
    268,642,983.20x = 403,064,007.60 × 258,689,703.20
  4. Step 4: Simplify right side
    268,642,983.20x = 104,268,508,496,646,544
  5. Step 5: Solve for x
    x = 104,268,508,496,646,544/268,642,983.20
  6. Step 6: Final answer
    x = 388,130,399.89

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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.