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Finding the Fourth Proportional to 260,168.40, 390,544.20 and 201,265.20

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Solution

The fourth proportional to 260,168.40, 390,544.20 and 201,265.20 is: 302,123.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,168.40 : 390,544.20 = 201,265.20 : x
  2. Step 2: Convert to fraction form
    260,168.40/390,544.20 = 201,265.20/x
  3. Step 3: Cross multiply
    260,168.40x = 390,544.20 × 201,265.20
  4. Step 4: Simplify right side
    260,168.40x = 78,602,956,521.84
  5. Step 5: Solve for x
    x = 78,602,956,521.84/260,168.40
  6. Step 6: Final answer
    x = 302,123.38

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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.