Home / 388,112,816.80-581,777,314.80-193,725,258.40

Finding the Fourth Proportional to 388,112,816.80, 581,777,314.80 and 193,725,258.40

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Solution

The fourth proportional to 388,112,816.80, 581,777,314.80 and 193,725,258.40 is: 290,392,266.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,112,816.80 : 581,777,314.80 = 193,725,258.40 : x
  2. Step 2: Convert to fraction form
    388,112,816.80/581,777,314.80 = 193,725,258.40/x
  3. Step 3: Cross multiply
    388,112,816.80x = 581,777,314.80 × 193,725,258.40
  4. Step 4: Simplify right side
    388,112,816.80x = 112,704,960,640,888,144
  5. Step 5: Solve for x
    x = 112,704,960,640,888,144/388,112,816.80
  6. Step 6: Final answer
    x = 290,392,266.79

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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.