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Finding the Fourth Proportional to 388,373,502.90, 582,336,305.55 and 146,060,901.30

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Solution

The fourth proportional to 388,373,502.90, 582,336,305.55 and 146,060,901.30 is: 219,007,128.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,373,502.90 : 582,336,305.55 = 146,060,901.30 : x
  2. Step 2: Convert to fraction form
    388,373,502.90/582,336,305.55 = 146,060,901.30/x
  3. Step 3: Cross multiply
    388,373,502.90x = 582,336,305.55 × 146,060,901.30
  4. Step 4: Simplify right side
    388,373,502.90x = 85,056,565,648,345,200
  5. Step 5: Solve for x
    x = 85,056,565,648,345,200/388,373,502.90
  6. Step 6: Final answer
    x = 219,007,128.48

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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.