Home / 279,939,800.40-419,909,700.60-164,865,109.20

Finding the Fourth Proportional to 279,939,800.40, 419,909,700.60 and 164,865,109.20

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Solution

The fourth proportional to 279,939,800.40, 419,909,700.60 and 164,865,109.20 is: 247,297,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,939,800.40 : 419,909,700.60 = 164,865,109.20 : x
  2. Step 2: Convert to fraction form
    279,939,800.40/419,909,700.60 = 164,865,109.20/x
  3. Step 3: Cross multiply
    279,939,800.40x = 419,909,700.60 × 164,865,109.20
  4. Step 4: Simplify right side
    279,939,800.40x = 69,228,458,643,558,304
  5. Step 5: Solve for x
    x = 69,228,458,643,558,304/279,939,800.40
  6. Step 6: Final answer
    x = 247,297,663.80

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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.