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Finding the Fourth Proportional to 217,031.40, 325,547.10 and 134,087.40

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Solution

The fourth proportional to 217,031.40, 325,547.10 and 134,087.40 is: 201,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,031.40 : 325,547.10 = 134,087.40 : x
  2. Step 2: Convert to fraction form
    217,031.40/325,547.10 = 134,087.40/x
  3. Step 3: Cross multiply
    217,031.40x = 325,547.10 × 134,087.40
  4. Step 4: Simplify right side
    217,031.40x = 43,651,764,216.54
  5. Step 5: Solve for x
    x = 43,651,764,216.54/217,031.40
  6. Step 6: Final answer
    x = 201,131.10

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1.5x scale

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.