Home / 279,207,336.80-418,811,005.20-74,735,412.06

Finding the Fourth Proportional to 279,207,336.80, 418,811,005.20 and 74,735,412.06

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Solution

The fourth proportional to 279,207,336.80, 418,811,005.20 and 74,735,412.06 is: 112,103,118.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,207,336.80 : 418,811,005.20 = 74,735,412.06 : x
  2. Step 2: Convert to fraction form
    279,207,336.80/418,811,005.20 = 74,735,412.06/x
  3. Step 3: Cross multiply
    279,207,336.80x = 418,811,005.20 × 74,735,412.06
  4. Step 4: Simplify right side
    279,207,336.80x = 31,300,013,048,884,804
  5. Step 5: Solve for x
    x = 31,300,013,048,884,804/279,207,336.80
  6. Step 6: Final answer
    x = 112,103,118.09

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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.