Home / 279,111,415.68-418,667,095.80-74,634,176.40

Finding the Fourth Proportional to 279,111,415.68, 418,667,095.80 and 74,634,176.40

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Solution

The fourth proportional to 279,111,415.68, 418,667,095.80 and 74,634,176.40 is: 111,951,257.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,111,415.68 : 418,667,095.80 = 74,634,176.40 : x
  2. Step 2: Convert to fraction form
    279,111,415.68/418,667,095.80 = 74,634,176.40/x
  3. Step 3: Cross multiply
    279,111,415.68x = 418,667,095.80 × 74,634,176.40
  4. Step 4: Simplify right side
    279,111,415.68x = 31,246,873,880,812,904
  5. Step 5: Solve for x
    x = 31,246,873,880,812,904/279,111,415.68
  6. Step 6: Final answer
    x = 111,951,257.19

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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.