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Finding the Fourth Proportional to 661,477.63, 992,123.04 and 212,140.12

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Solution

The fourth proportional to 661,477.63, 992,123.04 and 212,140.12 is: 318,180.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,477.63 : 992,123.04 = 212,140.12 : x
  2. Step 2: Convert to fraction form
    661,477.63/992,123.04 = 212,140.12/x
  3. Step 3: Cross multiply
    661,477.63x = 992,123.04 × 212,140.12
  4. Step 4: Simplify right side
    661,477.63x = 210,469,100,760.37
  5. Step 5: Solve for x
    x = 210,469,100,760.37/661,477.63
  6. Step 6: Final answer
    x = 318,180.22

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Double scale
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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.