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Finding the Fourth Proportional to 307,099.22, 423,809.98 and 171,133.34

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Solution

The fourth proportional to 307,099.22, 423,809.98 and 171,133.34 is: 236,171.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,099.22 : 423,809.98 = 171,133.34 : x
  2. Step 2: Convert to fraction form
    307,099.22/423,809.98 = 171,133.34/x
  3. Step 3: Cross multiply
    307,099.22x = 423,809.98 × 171,133.34
  4. Step 4: Simplify right side
    307,099.22x = 72,528,017,402.73
  5. Step 5: Solve for x
    x = 72,528,017,402.73/307,099.22
  6. Step 6: Final answer
    x = 236,171.28

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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.