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Finding the Fourth Proportional to 207,614.60, 311,421.90 and 170,216.90

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Solution

The fourth proportional to 207,614.60, 311,421.90 and 170,216.90 is: 255,325.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,614.60 : 311,421.90 = 170,216.90 : x
  2. Step 2: Convert to fraction form
    207,614.60/311,421.90 = 170,216.90/x
  3. Step 3: Cross multiply
    207,614.60x = 311,421.90 × 170,216.90
  4. Step 4: Simplify right side
    207,614.60x = 53,009,270,410.11
  5. Step 5: Solve for x
    x = 53,009,270,410.11/207,614.60
  6. Step 6: Final answer
    x = 255,325.35

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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.