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Finding the Fourth Proportional to 353,182.80, 529,313.40 and 163,621.20

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Solution

The fourth proportional to 353,182.80, 529,313.40 and 163,621.20 is: 245,218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,182.80 : 529,313.40 = 163,621.20 : x
  2. Step 2: Convert to fraction form
    353,182.80/529,313.40 = 163,621.20/x
  3. Step 3: Cross multiply
    353,182.80x = 529,313.40 × 163,621.20
  4. Step 4: Simplify right side
    353,182.80x = 86,606,893,684.08
  5. Step 5: Solve for x
    x = 86,606,893,684.08/353,182.80
  6. Step 6: Final answer
    x = 245,218.32

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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.