Home / 280,079,072.29-386,543,012.25-159,406,399.72

Finding the Fourth Proportional to 280,079,072.29, 386,543,012.25 and 159,406,399.72

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Solution

The fourth proportional to 280,079,072.29, 386,543,012.25 and 159,406,399.72 is: 220,000,121.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,079,072.29 : 386,543,012.25 = 159,406,399.72 : x
  2. Step 2: Convert to fraction form
    280,079,072.29/386,543,012.25 = 159,406,399.72/x
  3. Step 3: Cross multiply
    280,079,072.29x = 386,543,012.25 × 159,406,399.72
  4. Step 4: Simplify right side
    280,079,072.29x = 61,617,429,919,696,360
  5. Step 5: Solve for x
    x = 61,617,429,919,696,360/280,079,072.29
  6. Step 6: Final answer
    x = 220,000,121.45

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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.