Home / 279,936,720.90-419,905,081.35-126,587,780.10

Finding the Fourth Proportional to 279,936,720.90, 419,905,081.35 and 126,587,780.10

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Solution

The fourth proportional to 279,936,720.90, 419,905,081.35 and 126,587,780.10 is: 189,881,670.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,720.90 : 419,905,081.35 = 126,587,780.10 : x
  2. Step 2: Convert to fraction form
    279,936,720.90/419,905,081.35 = 126,587,780.10/x
  3. Step 3: Cross multiply
    279,936,720.90x = 419,905,081.35 × 126,587,780.10
  4. Step 4: Simplify right side
    279,936,720.90x = 53,154,852,100,806,408
  5. Step 5: Solve for x
    x = 53,154,852,100,806,408/279,936,720.90
  6. Step 6: Final answer
    x = 189,881,670.15

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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.