Home / 256,353,415.80-353,765,758.40-138,877,905.66

Finding the Fourth Proportional to 256,353,415.80, 353,765,758.40 and 138,877,905.66

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Solution

The fourth proportional to 256,353,415.80, 353,765,758.40 and 138,877,905.66 is: 191,650,450.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,353,415.80 : 353,765,758.40 = 138,877,905.66 : x
  2. Step 2: Convert to fraction form
    256,353,415.80/353,765,758.40 = 138,877,905.66/x
  3. Step 3: Cross multiply
    256,353,415.80x = 353,765,758.40 × 138,877,905.66
  4. Step 4: Simplify right side
    256,353,415.80x = 49,130,247,620,813,544
  5. Step 5: Solve for x
    x = 49,130,247,620,813,544/256,353,415.80
  6. Step 6: Final answer
    x = 191,650,450.48

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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.