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Finding the Fourth Proportional to 352,602,480.80, 528,903,721.20 and 255,856,599.20

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Solution

The fourth proportional to 352,602,480.80, 528,903,721.20 and 255,856,599.20 is: 383,784,898.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,602,480.80 : 528,903,721.20 = 255,856,599.20 : x
  2. Step 2: Convert to fraction form
    352,602,480.80/528,903,721.20 = 255,856,599.20/x
  3. Step 3: Cross multiply
    352,602,480.80x = 528,903,721.20 × 255,856,599.20
  4. Step 4: Simplify right side
    352,602,480.80x = 135,323,507,410,456,928
  5. Step 5: Solve for x
    x = 135,323,507,410,456,928/352,602,480.80
  6. Step 6: Final answer
    x = 383,784,898.80

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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.