Home / 256,909,661.28-354,535,674.84-139,434,991.56

Finding the Fourth Proportional to 256,909,661.28, 354,535,674.84 and 139,434,991.56

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Solution

The fourth proportional to 256,909,661.28, 354,535,674.84 and 139,434,991.56 is: 192,420,474.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,909,661.28 : 354,535,674.84 = 139,434,991.56 : x
  2. Step 2: Convert to fraction form
    256,909,661.28/354,535,674.84 = 139,434,991.56/x
  3. Step 3: Cross multiply
    256,909,661.28x = 354,535,674.84 × 139,434,991.56
  4. Step 4: Simplify right side
    256,909,661.28x = 49,434,678,829,034,304
  5. Step 5: Solve for x
    x = 49,434,678,829,034,304/256,909,661.28
  6. Step 6: Final answer
    x = 192,420,474.12

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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.