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Finding the Fourth Proportional to 661,760.08, 992,156.16 and 212,225.08

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Solution

The fourth proportional to 661,760.08, 992,156.16 and 212,225.08 is: 318,182.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,760.08 : 992,156.16 = 212,225.08 : x
  2. Step 2: Convert to fraction form
    661,760.08/992,156.16 = 212,225.08/x
  3. Step 3: Cross multiply
    661,760.08x = 992,156.16 × 212,225.08
  4. Step 4: Simplify right side
    661,760.08x = 210,560,420,428.49
  5. Step 5: Solve for x
    x = 210,560,420,428.49/661,760.08
  6. Step 6: Final answer
    x = 318,182.42

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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.