Home / 256,185,239.39-353,535,797.18-138,710,649.21

Finding the Fourth Proportional to 256,185,239.39, 353,535,797.18 and 138,710,649.21

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Solution

The fourth proportional to 256,185,239.39, 353,535,797.18 and 138,710,649.21 is: 191,420,786.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,185,239.39 : 353,535,797.18 = 138,710,649.21 : x
  2. Step 2: Convert to fraction form
    256,185,239.39/353,535,797.18 = 138,710,649.21/x
  3. Step 3: Cross multiply
    256,185,239.39x = 353,535,797.18 × 138,710,649.21
  4. Step 4: Simplify right side
    256,185,239.39x = 49,039,179,945,648,424
  5. Step 5: Solve for x
    x = 49,039,179,945,648,424/256,185,239.39
  6. Step 6: Final answer
    x = 191,420,786.23

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1.5x scale

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.