Home / 279,257,419,901.91-385,376,416,394.89-157,323,617,390.55

Finding the Fourth Proportional to 279,257,419,901.91, 385,376,416,394.89 and 157,323,617,390.55

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Solution

The fourth proportional to 279,257,419,901.91, 385,376,416,394.89 and 157,323,617,390.55 is: 217,107,255,039.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,257,419,901.91 : 385,376,416,394.89 = 157,323,617,390.55 : x
  2. Step 2: Convert to fraction form
    279,257,419,901.91/385,376,416,394.89 = 157,323,617,390.55/x
  3. Step 3: Cross multiply
    279,257,419,901.91x = 385,376,416,394.89 × 157,323,617,390.55
  4. Step 4: Simplify right side
    279,257,419,901.91x = 60,628,811,884,250,951,319,552
  5. Step 5: Solve for x
    x = 60,628,811,884,250,951,319,552/279,257,419,901.91
  6. Step 6: Final answer
    x = 217,107,255,039.27

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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.