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Finding the Fourth Proportional to 386,847.60, 579,810.60 and 162,207.60

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Solution

The fourth proportional to 386,847.60, 579,810.60 and 162,207.60 is: 243,118.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,847.60 : 579,810.60 = 162,207.60 : x
  2. Step 2: Convert to fraction form
    386,847.60/579,810.60 = 162,207.60/x
  3. Step 3: Cross multiply
    386,847.60x = 579,810.60 × 162,207.60
  4. Step 4: Simplify right side
    386,847.60x = 94,049,685,880.56
  5. Step 5: Solve for x
    x = 94,049,685,880.56/386,847.60
  6. Step 6: Final answer
    x = 243,118.18

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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.