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Finding the Fourth Proportional to 215,491.74, 323,237.40 and 57,715.89

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Solution

The fourth proportional to 215,491.74, 323,237.40 and 57,715.89 is: 86,573.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,491.74 : 323,237.40 = 57,715.89 : x
  2. Step 2: Convert to fraction form
    215,491.74/323,237.40 = 57,715.89/x
  3. Step 3: Cross multiply
    215,491.74x = 323,237.40 × 57,715.89
  4. Step 4: Simplify right side
    215,491.74x = 18,655,934,222.29
  5. Step 5: Solve for x
    x = 18,655,934,222.29/215,491.74
  6. Step 6: Final answer
    x = 86,573.78

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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.