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Finding the Fourth Proportional to 260,116.94, 390,175.44 and 73,128.44

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Solution

The fourth proportional to 260,116.94, 390,175.44 and 73,128.44 is: 109,692.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,116.94 : 390,175.44 = 73,128.44 : x
  2. Step 2: Convert to fraction form
    260,116.94/390,175.44 = 73,128.44/x
  3. Step 3: Cross multiply
    260,116.94x = 390,175.44 × 73,128.44
  4. Step 4: Simplify right side
    260,116.94x = 28,532,921,253.51
  5. Step 5: Solve for x
    x = 28,532,921,253.51/260,116.94
  6. Step 6: Final answer
    x = 109,692.67

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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.