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Finding the Fourth Proportional to 306,555.84, 423,069.12 and 170,600.40

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Solution

The fourth proportional to 306,555.84, 423,069.12 and 170,600.40 is: 235,440.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,555.84 : 423,069.12 = 170,600.40 : x
  2. Step 2: Convert to fraction form
    306,555.84/423,069.12 = 170,600.40/x
  3. Step 3: Cross multiply
    306,555.84x = 423,069.12 × 170,600.40
  4. Step 4: Simplify right side
    306,555.84x = 72,175,761,099.65
  5. Step 5: Solve for x
    x = 72,175,761,099.65/306,555.84
  6. Step 6: Final answer
    x = 235,440.83

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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.