Home / 313,981.67-433,336.08-305,432.22

Finding the Fourth Proportional to 313,981.67, 433,336.08 and 305,432.22

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Solution

The fourth proportional to 313,981.67, 433,336.08 and 305,432.22 is: 421,536.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,981.67 : 433,336.08 = 305,432.22 : x
  2. Step 2: Convert to fraction form
    313,981.67/433,336.08 = 305,432.22/x
  3. Step 3: Cross multiply
    313,981.67x = 433,336.08 × 305,432.22
  4. Step 4: Simplify right side
    313,981.67x = 132,354,799,535.31
  5. Step 5: Solve for x
    x = 132,354,799,535.31/313,981.67
  6. Step 6: Final answer
    x = 421,536.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.