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Finding the Fourth Proportional to 216,086.40, 323,546.40 and 169,430.40

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Solution

The fourth proportional to 216,086.40, 323,546.40 and 169,430.40 is: 253,688.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,086.40 : 323,546.40 = 169,430.40 : x
  2. Step 2: Convert to fraction form
    216,086.40/323,546.40 = 169,430.40/x
  3. Step 3: Cross multiply
    216,086.40x = 323,546.40 × 169,430.40
  4. Step 4: Simplify right side
    216,086.40x = 54,818,595,970.56
  5. Step 5: Solve for x
    x = 54,818,595,970.56/216,086.40
  6. Step 6: Final answer
    x = 253,688.32

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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.