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Finding the Fourth Proportional to 386,884.60, 579,866.10 and 162,244.60

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Solution

The fourth proportional to 386,884.60, 579,866.10 and 162,244.60 is: 243,173.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,884.60 : 579,866.10 = 162,244.60 : x
  2. Step 2: Convert to fraction form
    386,884.60/579,866.10 = 162,244.60/x
  3. Step 3: Cross multiply
    386,884.60x = 579,866.10 × 162,244.60
  4. Step 4: Simplify right side
    386,884.60x = 94,080,143,448.06
  5. Step 5: Solve for x
    x = 94,080,143,448.06/386,884.60
  6. Step 6: Final answer
    x = 243,173.66

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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.