Home / 811,206.71-1,216,717.10-212,225.67

Finding the Fourth Proportional to 811,206.71, 1,216,717.10 and 212,225.67

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Solution

The fourth proportional to 811,206.71, 1,216,717.10 and 212,225.67 is: 318,314.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,206.71 : 1,216,717.10 = 212,225.67 : x
  2. Step 2: Convert to fraction form
    811,206.71/1,216,717.10 = 212,225.67/x
  3. Step 3: Cross multiply
    811,206.71x = 1,216,717.10 × 212,225.67
  4. Step 4: Simplify right side
    811,206.71x = 258,218,601,747.96
  5. Step 5: Solve for x
    x = 258,218,601,747.96/811,206.71
  6. Step 6: Final answer
    x = 318,314.18

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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.