Home / 290,332,776.06-400,390,103.43-211,892,082.30

Finding the Fourth Proportional to 290,332,776.06, 400,390,103.43 and 211,892,082.30

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Solution

The fourth proportional to 290,332,776.06, 400,390,103.43 and 211,892,082.30 is: 292,214,657.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,332,776.06 : 400,390,103.43 = 211,892,082.30 : x
  2. Step 2: Convert to fraction form
    290,332,776.06/400,390,103.43 = 211,892,082.30/x
  3. Step 3: Cross multiply
    290,332,776.06x = 400,390,103.43 × 211,892,082.30
  4. Step 4: Simplify right side
    290,332,776.06x = 84,839,492,748,095,072
  5. Step 5: Solve for x
    x = 84,839,492,748,095,072/290,332,776.06
  6. Step 6: Final answer
    x = 292,214,657.61

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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.