Home / 279,959,009.40-419,938,514.10-126,610,068.60

Finding the Fourth Proportional to 279,959,009.40, 419,938,514.10 and 126,610,068.60

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Solution

The fourth proportional to 279,959,009.40, 419,938,514.10 and 126,610,068.60 is: 189,915,102.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,959,009.40 : 419,938,514.10 = 126,610,068.60 : x
  2. Step 2: Convert to fraction form
    279,959,009.40/419,938,514.10 = 126,610,068.60/x
  3. Step 3: Cross multiply
    279,959,009.40x = 419,938,514.10 × 126,610,068.60
  4. Step 4: Simplify right side
    279,959,009.40x = 53,168,444,077,983,064
  5. Step 5: Solve for x
    x = 53,168,444,077,983,064/279,959,009.40
  6. Step 6: Final answer
    x = 189,915,102.90

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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.