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Finding the Fourth Proportional to 326,695.32, 450,991.08 and 217,980.36

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Solution

The fourth proportional to 326,695.32, 450,991.08 and 217,980.36 is: 300,914.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,695.32 : 450,991.08 = 217,980.36 : x
  2. Step 2: Convert to fraction form
    326,695.32/450,991.08 = 217,980.36/x
  3. Step 3: Cross multiply
    326,695.32x = 450,991.08 × 217,980.36
  4. Step 4: Simplify right side
    326,695.32x = 98,307,197,975.19
  5. Step 5: Solve for x
    x = 98,307,197,975.19/326,695.32
  6. Step 6: Final answer
    x = 300,914.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.