Home / 256,621,287.92-354,144,340.74-145,128,801.21

Finding the Fourth Proportional to 256,621,287.92, 354,144,340.74 and 145,128,801.21

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Solution

The fourth proportional to 256,621,287.92, 354,144,340.74 and 145,128,801.21 is: 200,281,683.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,621,287.92 : 354,144,340.74 = 145,128,801.21 : x
  2. Step 2: Convert to fraction form
    256,621,287.92/354,144,340.74 = 145,128,801.21/x
  3. Step 3: Cross multiply
    256,621,287.92x = 354,144,340.74 × 145,128,801.21
  4. Step 4: Simplify right side
    256,621,287.92x = 51,396,543,626,901,968
  5. Step 5: Solve for x
    x = 51,396,543,626,901,968/256,621,287.92
  6. Step 6: Final answer
    x = 200,281,683.74

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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.