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Finding the Fourth Proportional to 215,673.84, 323,510.76 and 65,914.56

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Solution

The fourth proportional to 215,673.84, 323,510.76 and 65,914.56 is: 98,871.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,673.84 : 323,510.76 = 65,914.56 : x
  2. Step 2: Convert to fraction form
    215,673.84/323,510.76 = 65,914.56/x
  3. Step 3: Cross multiply
    215,673.84x = 323,510.76 × 65,914.56
  4. Step 4: Simplify right side
    215,673.84x = 21,324,069,400.67
  5. Step 5: Solve for x
    x = 21,324,069,400.67/215,673.84
  6. Step 6: Final answer
    x = 98,871.84

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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.