Home / 311,868.46-430,378.18-168,628.19

Finding the Fourth Proportional to 311,868.46, 430,378.18 and 168,628.19

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Solution

The fourth proportional to 311,868.46, 430,378.18 and 168,628.19 is: 232,706.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,868.46 : 430,378.18 = 168,628.19 : x
  2. Step 2: Convert to fraction form
    311,868.46/430,378.18 = 168,628.19/x
  3. Step 3: Cross multiply
    311,868.46x = 430,378.18 × 168,628.19
  4. Step 4: Simplify right side
    311,868.46x = 72,573,893,508.89
  5. Step 5: Solve for x
    x = 72,573,893,508.89/311,868.46
  6. Step 6: Final answer
    x = 232,706.74

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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.