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Finding the Fourth Proportional to 262,257.76, 393,386.88 and 112,400.80

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Solution

The fourth proportional to 262,257.76, 393,386.88 and 112,400.80 is: 168,601.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,257.76 : 393,386.88 = 112,400.80 : x
  2. Step 2: Convert to fraction form
    262,257.76/393,386.88 = 112,400.80/x
  3. Step 3: Cross multiply
    262,257.76x = 393,386.88 × 112,400.80
  4. Step 4: Simplify right side
    262,257.76x = 44,217,000,021.50
  5. Step 5: Solve for x
    x = 44,217,000,021.50/262,257.76
  6. Step 6: Final answer
    x = 168,601.30

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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.