Home / 266,864,521.96-400,555,636.32-128,787,303.76

Finding the Fourth Proportional to 266,864,521.96, 400,555,636.32 and 128,787,303.76

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Solution

The fourth proportional to 266,864,521.96, 400,555,636.32 and 128,787,303.76 is: 193,305,876.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,864,521.96 : 400,555,636.32 = 128,787,303.76 : x
  2. Step 2: Convert to fraction form
    266,864,521.96/400,555,636.32 = 128,787,303.76/x
  3. Step 3: Cross multiply
    266,864,521.96x = 400,555,636.32 × 128,787,303.76
  4. Step 4: Simplify right side
    266,864,521.96x = 51,586,480,407,523,928
  5. Step 5: Solve for x
    x = 51,586,480,407,523,928/266,864,521.96
  6. Step 6: Final answer
    x = 193,305,876.81

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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.