Home / 318,979,647.04-440,192,105.76-172,301,995.84

Finding the Fourth Proportional to 318,979,647.04, 440,192,105.76 and 172,301,995.84

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Solution

The fourth proportional to 318,979,647.04, 440,192,105.76 and 172,301,995.84 is: 237,776,858.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,979,647.04 : 440,192,105.76 = 172,301,995.84 : x
  2. Step 2: Convert to fraction form
    318,979,647.04/440,192,105.76 = 172,301,995.84/x
  3. Step 3: Cross multiply
    318,979,647.04x = 440,192,105.76 × 172,301,995.84
  4. Step 4: Simplify right side
    318,979,647.04x = 75,845,978,375,460,352
  5. Step 5: Solve for x
    x = 75,845,978,375,460,352/318,979,647.04
  6. Step 6: Final answer
    x = 237,776,858.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.