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Finding the Fourth Proportional to 393,389.60, 590,276.40 and 182,919.20

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Solution

The fourth proportional to 393,389.60, 590,276.40 and 182,919.20 is: 274,468.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,389.60 : 590,276.40 = 182,919.20 : x
  2. Step 2: Convert to fraction form
    393,389.60/590,276.40 = 182,919.20/x
  3. Step 3: Cross multiply
    393,389.60x = 590,276.40 × 182,919.20
  4. Step 4: Simplify right side
    393,389.60x = 107,972,886,866.88
  5. Step 5: Solve for x
    x = 107,972,886,866.88/393,389.60
  6. Step 6: Final answer
    x = 274,468.08

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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.