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Finding the Fourth Proportional to 245,503.55, 338,841.44 and 153,665.44

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Solution

The fourth proportional to 245,503.55, 338,841.44 and 153,665.44 is: 212,087.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,503.55 : 338,841.44 = 153,665.44 : x
  2. Step 2: Convert to fraction form
    245,503.55/338,841.44 = 153,665.44/x
  3. Step 3: Cross multiply
    245,503.55x = 338,841.44 × 153,665.44
  4. Step 4: Simplify right side
    245,503.55x = 52,068,217,928.65
  5. Step 5: Solve for x
    x = 52,068,217,928.65/245,503.55
  6. Step 6: Final answer
    x = 212,087.43

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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.