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Finding the Fourth Proportional to 384,659.72, 577,007.40 and 118,432.16

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Solution

The fourth proportional to 384,659.72, 577,007.40 and 118,432.16 is: 177,653.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,659.72 : 577,007.40 = 118,432.16 : x
  2. Step 2: Convert to fraction form
    384,659.72/577,007.40 = 118,432.16/x
  3. Step 3: Cross multiply
    384,659.72x = 577,007.40 × 118,432.16
  4. Step 4: Simplify right side
    384,659.72x = 68,336,232,717.98
  5. Step 5: Solve for x
    x = 68,336,232,717.98/384,659.72
  6. Step 6: Final answer
    x = 177,653.73

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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.