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Finding the Fourth Proportional to 307,165.68, 423,875.18 and 171,214.48

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Solution

The fourth proportional to 307,165.68, 423,875.18 and 171,214.48 is: 236,268.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,165.68 : 423,875.18 = 171,214.48 : x
  2. Step 2: Convert to fraction form
    307,165.68/423,875.18 = 171,214.48/x
  3. Step 3: Cross multiply
    307,165.68x = 423,875.18 × 171,214.48
  4. Step 4: Simplify right side
    307,165.68x = 72,573,568,528.61
  5. Step 5: Solve for x
    x = 72,573,568,528.61/307,165.68
  6. Step 6: Final answer
    x = 236,268.48

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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.