Home / 811,061.56-1,216,661.54-212,021.76

Finding the Fourth Proportional to 811,061.56, 1,216,661.54 and 212,021.76

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Solution

The fourth proportional to 811,061.56, 1,216,661.54 and 212,021.76 is: 318,050.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,061.56 : 1,216,661.54 = 212,021.76 : x
  2. Step 2: Convert to fraction form
    811,061.56/1,216,661.54 = 212,021.76/x
  3. Step 3: Cross multiply
    811,061.56x = 1,216,661.54 × 212,021.76
  4. Step 4: Simplify right side
    811,061.56x = 257,958,721,035.11
  5. Step 5: Solve for x
    x = 257,958,721,035.11/811,061.56
  6. Step 6: Final answer
    x = 318,050.73

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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.